Hannah Hepworth, of the Anxiety Revolution Podcast, and I team up to discuss a natural and functional approach to managing anxiety.
In our talk, featured in her 2019 Anxiety Revolution Summit, a series of talks with integrative mental health practitioners and experts, we discuss circadian rhythms, the body’s stress response and the HPA (hypothalamic pituitary adrenal) axis, and blood sugar, and their role in anxiety.
Click the link to listen to this 30-minute interview. Let me know what you think!
I review my adventurous year of living on the Low Carb High Fat Ketogenic Diet.
I’ve always had a sweet tooth.
I remember binging on Halloween candy as a kid, stuffing one tiny chocolate bar after another into my mouth, as fast as my little fingers could unwrap them, trapped in some kind of sugar-filled trance.
“Never get between Talia and her food!” My family would joke when my blood sugar would crash between meals and I’d rage towards the fridge for a snack to keep me sane.
I remember digging into the little bags of cheese popcorn reserved for school lunches, finishing off one after another and then hiding the wrappers in their big Costco box so that it would look like it was still full, the way rebellious teens top up empty vodka bottles with water.
I can gain weight with the drop of a hat (but also put on muscle fairly easily), and it takes concentrated effort and dedication to take it off.
After a period of temporary stress and bagel-related weight gain, I decided to embark on a bit of experimentation. Work was getting busy and I wanted to supply my brain with constant energy without having to take snack breaks every few hours. Also enticed by anecdotes of shattered weight loss plateaus, I decided to “go Keto”.
I like experimenting with diet. Like many health-conscious people, finding the right nutrition regime for me has been a process. In my teens I started controlling portions and switching out white breads for whole grain rye and Jolly Ranchers for carrot sticks. In my early 20’s, I was vegetarian. I tried being vegan for a while before deciding it was a disaster for my health when I began to experience nutrient deficiencies, weight gain, and hormonal issues.
Later on, I followed my naturopathic school classmates to a modified Paleo diet (keeping in some gluten-free grains and legumes), then moved to a more traditional Paleo diet (taking out the grains and legumes), before going back to the modified version (which is probably the best eating style for me—more on that later).
For the most part, my diet is comprised of whole foods, with lots of vegetables, but in the Fall of 2016, when this all began, I was in a pretty Standard North American place when it came to food intake. At the time I was suffering from IBS, some issues related to subclinical PCOS, and fatigue. I was also starting to see some signs of impaired glucose control.I wasn’t feeling good and I was in need of a kind of reset of sorts.
I was interested in seeing how relying on ketone bodies for fuel would help my body, mental performance, and improve my blood glucose control and symptoms. I have a family history of type II diabetes and I wanted to do what I could to prevent insulin resistance and metabolic syndrome. Drastic times call for drastic measures, I thought.
Ergo, The Ketogenic Diet.
About the Diet:
The Classic Ketogenic Diet was first developed in the 1920’s to treat children with medication-resistant epilepsy.
When our brains are starved of glucose, their preferred fuel source (our brains use up 60% of the body’s glucose), the liver creates ketone bodies from stored or dietary fat that the brain can use as a substitute source of energy.
One of these ketone bodies, beta-hydroxybutyrate, is thought to be a particularly therapeutic molecule for the brain, conveying anti-convulsive benefits, thereby helping to reduce the incidence of seizures in children who don’t respond to medication.
However, the original Ketogenic diet is more extreme than the general health and weight loss-aimed diet we see described in recipe books these days. The Classic Ketogenic diet consists of about 90% of calories coming from fat. In order to achieve that, followers need to severely restrict their protein intake, and virtually eliminate all dietary sources of carbohydrate, which drastically limits their nutrition choices.
Since, the benefits of beta-hydroxybutyrate are being studied for other neurological disorders, such as Parkinson’s disease, dementia, migraine headaches and narcolepsy. It’s being looked at as a potential treatment for mental health conditions, like autism and depression, and metabolic disorders such as type II diabetes, and even to increase the efficacy of chemotherapy and radiation treatments in cancer. Other studies are looking at its role in improving cognitive function in mice and humans.
Some research shows that beta-hydroxybutyrate can expand lifespan by interacting with genes that slow aging. It is also shown to confer anti-inflammatory and antioxidant benefits.
In the 1970’s, Dr. Atkins responded to the high-carbohydrate, low-fat dogma of the nutrition world at the time, by bringing a modified Ketogenic diet into vogue. Restricting all forms of carbohydrates and encouraging a consumption of the still-vilified high-fat foods like bacon, eggs and cheese, Atkins affirmed that people could lose weight by eating fat, as long as they restricted carbohydrates at the same time.
The modern version of the Ketogenic Diet is slightly more health-conscious, promoting a higher intake of vegetables. The current diet restricts carbohydrates to under 20 to 50 grams per day, and encourages a high fat intake and a moderate protein intake, in order to encourage the body to turn to fat as its primary source of fuel. The current version of “Keto” is less strict than it’s initial epilepsy-treating incarnation, with anywhere from 60-85% of its calories coming from fat.
My Version of Keto:
I started the whole journey by tracking my food intake (using My Fitness Pal). My aim was to consume 20 grams of net carbs, or less, per day to push my body into using fat-turned-to-ketone bodies as a its primary fuel source.
Net carbs are calculated by subtracting dietary fibre from total grams of carbohydrates. For example, 1 cup of raw broccoli contains 6 grams of carbs. 2.5 of those are fibre. Therefore, the net carbs in broccoli are 3.5, which would count towards my net carb goal of 20 grams per day.
This isn’t easy. Take a look at any package of food you regularly consume. 1 cup of cooked oatmeal contains 23 grams of net carbs: 3 grams over my entire daily allotment. Therefore all high-carb foods like grains, legumes, starchy nuts, all fruits, and some starchier vegetables, were off limits.
Many people opt to test their blood, breath or urine for ketone bodies to determine whether or not their bodies are in ketosis. I dabbled in this, using the urinalysis strips in my clinic to test for urinary ketones. However, even though I was sticking to the diet, the strips would mostly turn up negative for ketones.
There are a few reasons why ketone strips may not be a reliable marker for ketosis. Firstly, the don’t test for beta-hydroxybutyrate, which is the main ketone body utilized by the brain, but acetoacetate, another ketone body produced in the liver.
Secondly, urinalysis strips only test for urine ketone spillover. They don’t necessarily reflect blood levels, and they won’t pick up the ketones that are being utilized as fuel by the body. If cells are absorbing all the ketones the liver produces, urine testing may not be positive.
The most accurate, albeit more expensive, method for testing ketone bodies is through a skin-prick test that analyzes blood levels of beta-hydroxybutyrate.
While I knew that the urine strips weren’t highly accurate, not having my state of ketosis validated was discouraging. I was often left in doubt over whether things were “working”. I wondered if there was some other mechanism going on. Was my body finding carbohydrates from someplace else? Did I have Small Intestinal Bacteria Overgrowth that was digesting my fibre and allowing me to absorb it somehow? Were my blood ketones being used up somewhere else (by the yeast in my gut, for instance)?
I did have signs of being in ketosis that I could watch for, however. When I avoid carbs, or fast for a few days, I start to develop a metallic taste on the tip of my tongue. It’s not a common sign of ketosis, a more common sign is a “nail polish” or “paint thinner” taste in the back of the throat, but still a symptom that some people report.
Keto Flu:
During the first few days of switching to Low Carb High Fat, I had to white knuckle through a phase realistically termed the “Keto or Low Carb Flu”. This horrible phenomenon is thought to be a result of the body switching from burning glucose as its primary fuel source to adapting to ketone body production. There is often a painful adjustment period for brains that have to learn how to rely on ketones for their main fuel source after a lifetime of glucose abundance.
It was nasty. I felt intense hunger and sugar cravings, nausea, dizziness, and weakness—it truly was a “flu”.
I knew that I had spent most, if not all, of my life as a sugar burner. Before Keto, I would crave food even just two hours after a full meal. I would often feel “hangry”: dizzy and shaky in between meals, and irritable if made to wait for food for too long. I had been existing between carb-dense meals, experiencing insanity-inducing reactive hypoglycemia between my regular sugar fixes.
The more I read about others’ experiences, the more I was assured that the keto flu symptoms were actually a sign of my body healing. I was becoming adapted to other fuel sources, which was a good thing, I thought.
So, I muscled through and followed the online advice: I consumed more fat to provide more fuel to my brain, including medium chain triglyceride (MCT) oil, which is quickly absorbed by the lymphatic system and turned into ketones by the liver, and I consumed electrolytes, which are more rapidly excreted from the bodies of low carb dieters.
For some people, Keto flu can last for days, for others it lasts weeks. For me, the Keto flu thankfully only lasted two days, after which my body began to adjust and my cravings for sugar went down. I began to feel more energy, which felt encouraging.
Daily Meal Plan:
For breakfast, I would typically eat a high-fat smoothie containing coconut milk yogurt, gelatin, and avocado, and topped with pumpkin seeds and cacao. Sometimes I’d make fat bombs or homemade unsweetened chocolate.
I’d have my second meal of the day in the mid-afternoon, around 2 to 3 pm, for which I’d consume a few cups of cruciferous vegetables, like broccoli or cabbage, with a fatty cut of meat like ground beef, chicken thighs, or salmon, all topped with liberal amounts of fat from coconut, olives, avocados, or grass-fed ghee. I made a lot of batch-cooked grain-free curries and stews.
If I had a third meal or snack in the day, it would be another serving of fat: a handful of macadamia nuts or a hunk of creamed coconut.
Eating this way made me feel like Obama and his grey suits—I didn’t have to plan my meals too carefully. All I had to do was eat fat. My food was so calorie dense and my blood sugar so stable that I didn’t need to eat often. This meant that I didn’t need to worry about bringing food with me everywhere I went; one meal could satiate me for half the day. Hunger was never an emergency situation, as it had been in the past. Hunger would come on very slowly, and it would never be “hanger”; my already low blood sugar had nowhere to dip to. If I needed more food, I could always wait until I got home to eat.
More Benefits:
Within a few days, my PCOS- related cystic acne cleared. I also felt slimmer as some water retention deflated. This felt good. Our body stores carbohydrate in the form of glycogen in the liver and muscles. Glycogen stores retain water.
When glycogen stores are used up, a rapid 5 or more pound drop in weight can occur. This is the “water weight” that people talk about losing when they first begin some kind of nutrition plan.
It’s also common to notice a drop in water weight from a decrease in inflammation, when embarking on a new eating plan. I know that I am sensitive to certain carbs and dairy and, because those things were out of my diet overall (although Keto can certainly include high-fat dairy products for those who can tolerate them), the water retention caused by chronic inflammation seemed to clear.
Although it seems to attract people primarily for its hip-slimming potential, the Ketogenic diet probably does not cause weight loss in and of itself. Instead, the diet encourages a passive reduction in calories by stabilizing blood sugar and insulin levels, while promoting the intake of highly satiating foods containing protein and fat. Ketone bodies also have appetite-suppressing effects. Therefore, it’s probably a calorie deficit that causes the weight loss, rather than any specific biochemistry in the diet itself.
I didn’t lose much more weight than the water weight. However, my mood was brighter. I would wake up in the morning looking forward to the day, which often doesn’t happen in the winter. I felt more sustained energy throughout the day, and really enjoyed the decreased appetite, which led to more productivity.
I felt fine consuming two meals a day, able to get through hours of back-to-back patient visits without needing a snack or a break. It was actually incredible to need so few meals; it was like becoming another person, one no longer ruled by sugar cravings. I was like a camel, switching to stored fuel when the fat from my last meal had run out, and the transition was seamless. There was no wall to hit, and no hypoglcyemic crash to be seen.
I also noticed less bloating and digestive issues, probably from the lack of fermentation in my gut and the reduction in foods that tend to aggravate IBS, like certain vegetables, fruit, and legumes.
However, all was not roses on the Keto diet. While the first few months were dreamy, the longer I stayed on it the more I started to notice changes in my body that indicated the honeymoon period I was enjoying wasn’t going to last.
The Microbiome:
The research is in: human beings probably need 10 servings of fruits and vegetables a day (roughly 5 cups), or 800 g, a day to get the most heart disease, stroke and cancer-preventing benefits that diet can afford us. The International Journal of Epidemiology concluded that, if the correlations found in their February 2017 study were causal, almost 8 million lives might have been saved in 2013 if everyone in the world had simply consumed their fruits and veggies.
It’s one thing all diets, even the faddy ones, agree on—from the Paleo Peeps, to Plant-Based Hippies, to Raw Macrobiotic Sun Worshippers, to Whole Foods Michael Pollen Omnivores, to the dejected nagged-at husband pushing brusselsprouts around on his plate—fruit and vegetables are good for you. You should eat them. If you’re a typical North American, you should probably eat more than you’re eating. The health value of everything else we eat seems to be up for debate: red meat, saturated fat, soy, bread, coffee. The benefits of eating enough fruits and vegetables, however? There’s no contest.
It’s hard to pick one way in which fruits and vegetables are so health protective. It could be because of their high concentrations of micronutrients, reducing the risk of common nutrient deficiencies, like magnesium and vitamin C. It could be because, if you’re filling your body with a kilogram of fruits and vegetables a day, you probably aren’t scarfing down an entire medium-sized pizza and supersized orange pop as well—there just isn’t room. It could also be the antioxidants they contain that protect cells against free radical damage, protecting DNA. Or perhaps its the fermentable fibres present in fruits and vegetables that feed our invaluable microbiome.
The problem with keeping net carbs under 20 grams a day was that I needed to restrict my fruit and vegetable intake. I was eating no fruit at all, and staying away from the starchier veggies, like carrots and beets. I still stuck to my beloved leafy greens and crucifates, but even eating 2 to 3 cups of those guys a day would push me to the upper limits of my carbohydrate intake, which meant I couldn’t eat them as liberally as I had been.
Getting enough vegetables and (any) fruits on the keto diet is hard, if not impossible. This can impact our ability to get the micronutrients we need, but also enough fermentable fibres from vegetables like garlic, onions, yams, Jerusalem artichokes, and legumes, which provide food for our microbiome.
Feeding our gut bugs is important. They benefit us in numerous ways, from digesting out food, to calming inflammation, to fuelling gut cells by producing a short-chain fatty acid called butyrate. They help our immune systems function optimally. They produce neurotransmitters for our brains to work. They balance our stress responses and our circadian rhythms.
Jeff Leach, at the Human Microbiome Project speculates that the lack of dietary fibre in most low-carb diets may impact the health of the microbiome in negative ways by depriving the gut bacteria of their preferred food sources, as well as altering the acidity of the colon and intestines. He cites this article, in which obese subjects on a high-protein and low-carb diet had lower levels of butyrate in their bodies and intestines, likely due to decreased diversity in their guts.
There are, however, some studies that suggest that a Ketogenic diet can improve the microbiome in children with epilepsy, and autism, and some speculation by the researchers that that may be how the diets treat these conditions. However, since these studies are not done in “healthy” children, with an already healthy microbiota, it’s hard to extrapolate the findings to the healthy adult population.
Then there’s the fact that most studies that look at high fat diets and their impact on the microbiome are mostly done in rats. Of course, rats aren’t humans, despite there being relative genetic similarities. In these animal studies, researchers refer to “a high fat diet” when in fact they mean a high fat, high sugar diet. The sources of fat in these “high fat” mouse diets are often corn, margarine, or soy oil, which we know are highly inflammatory and offer few if any health benefits.
In other words, many studies on “high fat” diets are not looking at a relatively balanced Ketogenic diet that consists of vegetables, proteins, and healthy sources of fats from avocados, coconut, fish, olives, nuts and seeds and grass-fed meats.
Context is important as well. Is it the high fat diet that causes a reduction in gut diversity or the absence of fibre? This one mouse study showed that simply providing the mice with fibre in addition to their high fat diets decreased their risk of obesity.
I felt that my gut initially improved in the first few months on Keto: the diet was low in foods that aggravate me: namely refined carbs, sugar, gluten and dairy, as well as some of the fermentable fibres that can aggravate IBS. However, it never fully healed. After a few months, I started to notice the symptoms of bloating and digestive irregularities coming back.
Candida, a yeast that resides in the gut and can overgrow in the intestines in some people, especially the immunocompromised, causing symptoms of fatigue, IBS, and weight gain, among a variety of other symptoms, can survive on ketone bodies. Yeasts have mitochondria of their own. Some species of gut bacteria can consume protein, bile salts and even fats.
Contrary to what many claim, a Ketogenic diet doesn’t necessarily “starve out” the bad gut bugs. Combined with the lack of fibre to feed the beneficial gut bacteria and promote more bacterial diversity, a prolonged Ketogenic diet may be a recipe for gut dysbiosis.
Hormones:
Throughout my year spent in ketosis, I definitely noticed an improvement in my insulin signalling and glucose control, especially in the first few months. Looking at my blood work in March, after about a year of the Ketogenic diet (and then having been off it for a few months), my fasting insulin was very low and fasting blood glucose levels were in the low-optimal range. HOMA-IR, a calculation that is used as a marker of insulin resistance, was also low, indicating good insulin sensitivity.
I personally believe that this means that my risk for getting metabolic syndrome or type II diabetes is low, as long as I maintain this level of insulin sensitivity by watching the glycemic load of my diet and my stress levels.
The metabolic flexibility awarded to me from my year in ketosis also proved to be invaluable. Now, I no longer fear fasting and I can survive on other fuel sources besides sugar. My brain knows how to tap into stored and dietary fat more efficiently, and use those for energy. Even when not following any sort of low-carb diet, I noticed that I could survive between meals while travelling in Southeast Asia for two months, whereas normally I would have had to exist on unhealthy, sugary snacks.
However, after a few months on the diet, I began to notice a decline in my menstrual health. My cycles began to get longer, and soon I started missing periods. I noticed more hair falling out in the shower and more cystic acne developing on my chin. When I ran my blood estrogen and progesterone levels, I was surprised to see that their levels were very low.
We know that insulin, while often vilified as a “fat storage” hormone is actually responsible for storing everything, including nutrients. It also correlates with estrogen levels and the conversion of T4, one of our thyroid hormones, to its active friend, T3, which runs our metabolism. Insulin builds muscle, bone and brain cells. Very low insulin levels, in my case, were contributing to amenorrhea and a disruption in my sex hormones.
This wasn’t good.
While not quite the same as Intermittent Fasting (IF), Keto is often grouped into the same category because of its similar impact on blood glucose and insulin. The difference is that Intermittent Fasting induces ketosis through periodic food restriction, as opposed to carb restriction. Keto and IF often go hand in hand, however. The reduced hunger and high-nutrient density of the foods eaten on a Ketogenic diet often lend well to practicing intermittent fasting. It did in my case—I was only eating two main meals a day.
I always found it interesting, however, that most proponents of intermittent fasting are men. The male body appears to thrive in the fasted state, getting a boost of growth hormone and norepinephrine, both of which provide men with energy, motivation, and an improved sense of well-being.
This hormonal change may be a remnant of our ancestral hunter-gatherer days where it would be an advantage to feel motivated and energized to go out and hunt during periods of food scarcity.
I don’t think female bodies experience exactly the same effect. Some preliminary animal research tends to suggest that as well.
A few rat studies indicate that fasting may impair female insulin sensitivity, and induce amenorrhea, or missed periods. Female bodies rely on a consistent influx of calories and carbohydrates to stimulate insulin, which plays a role in stimulating thyroid hormones and estrogen, to continue to ovulate. Another study showed that fasting tended to “masculinize” female rats, lowering their female hormones, and increasing their levels of androgens, the male sex hormones, like testosterone.
Of course, these studies were done on fasted rats, which cannot be fully translated to the effects of Intermittent Fasting and Ketogenic diets on women. However, some of these findings did validate my experience, which certainly wasn’t being validated in the podcasts and blog posts I was exposed to, largely written and followed by men.
I did experience positive hormonal effects: the increased insulin sensitivity and lowered blood glucose. However, I was not happy about my irregular cycles and estrogen deficiency.
Therefore, I decided to increase my carbohydrate intake, returning to a more moderate Paleo diet that consists of some fruit, starchier vegetables and legumes. After a few months, my periods returned to normal, my skin cleared up, my hair stopped falling out, and my thyroid hormones, estrogen and progesterone levels all returned to their optimal ranges.
I have still have low fasting insulin levels, suggesting that the Ketogenic diet did help to reset my insulin sensitivity and that this effect may be lasting.
Metabolic Health:
After a year of doing the Ketogenic diet, and then a few months of returning to a moderate-carb paleo diet, I tested my cholesterol levels and inflammatory markers. My HDL cholesterol (the “good” cholesterol, to put it very simply) was high, my triglycerides (a risk factor for heart disease) were very low, and my LDL cholesterol (the “bad” cholesterol that statin drugs target) was also low. My inflammatory markers: C-Reactive Protein (CRP) and erythrocyte sedimentation rate (ESR), were also low.
While it is typically the monounsaturated fats, like olive oils and avocados, that are associated with increased levels of the heart-protective HDL cholesterol, even saturated fats from coconut oil can raise HDL. LDL is often lowered by these healthy monounsaturated fats, however saturated fats, even healthy ones, can raise LDL in certain individuals.
All else being equal, higher levels of LDL may not be as big of a problem as we think. Especially in the context of low risk factors, like low inflammation, absence of smoking and a healthy body weight. What’s more, the triglycerides and cholesterol/HDL ratio may be more important factors for determining heart disease risk. Further, assessing LDL particle size may also provide those concerned about their LDL levels with more information concerning their cardiovascular health. That being said, it is important to be aware that some of the fats present in a Ketogenic diet have the potential to raise blood levels of LDL in certain susceptible individuals, and that not everyone’s blood lipid results will look like mine.
Triglyceride levels are associated with liver function, and generally reflect dietary sugar, fructose and refined carbohydrate intake, rather than fat intake. Reducing refined dietary carbohydrates like white grains, flours and sugars is a good strategy for reducing triglyceride levels and reducing heart disease risk.
Some individuals can experience elevated levels of inflammation on a Ketogenic diet, depending on the quality of foods consumed. A Ketogenic diet low in fibre that fails to feed the microbiome; high in foods that a person may have an individualized sensitivity to (such as dairy, eggs, nuts or soy); or high in inflammatory fats like trans fats, and industrial oils like canola and corn oil, may all contribute to increased inflammation.
That being said, certain ketone bodies like beta-hydroxybutyrate may have anti-inflammatory properties. Many of the fats consumed in a mindful, whole foods Ketogenic diet, such as olives, avocados, seeds, salmon, and coconut, are also anti-inflammatory.
I found my blood markers a good indicator of the power of a high-fat, low-carb diet to, at least in my case, improve HDL cholesterol and lower triglycerides, fasting insulin and fasting glucose levels. Whether I needed an entire year in ketosis, or whether I even needed to actually enter ketosis to receive these benefits, isn’t clear. Perhaps I could have gotten the same results by moderately lowering my carb intake while increasing my dietary intake of healthy fats.
Modified Ketogenic Diets:
While I do think I benefitted from entering into ketosis, I would not necessarily recommend a Ketogenic diet to patients unless to achieve some sort of therapeutic goal, such as improved insulin resistance, or for adjunct cancer care, to reduce inflammation, or to improve severe depression, migraines, or narcolepsy.
However, there may be a benefit to cyclical Ketogenic diets for memory and cognition, and increased life span in mice. Cyclical Ketogenic diets involve entering ketosis on alternate weeks. On the other weeks, participants return to a normal, whole foods diet that contains higher amounts of carbohydrates. In this case, individuals gets the benefits of beta-hydroxybutyrate production and increased metabolic flexibility on their weeks on, while also being able to eat a high amount of fermentable carbs and fibres on their weeks off, essentially getting the best of both worlds.
Adding medium chain triglycerides to food may also confer health benefits, similar to being on a Ketogenic diet. One study showed that adding MCT oil to a high-carb breakfast (pasta), reduced appetite in men. This is likely because, after burning through the glucose in the pasta, the men’s brains were able to access the ketone bodies that were made readily available by burning the MCT oil. This kept their brains fuelled and their bodies satiated for longer.
The men eating pasta and MCT oil in the study had a ketone blood level of 0.3, which is similar to that obtained from a diet that derives 10% of its calories from carbohydrates, which is an essentially a very low-carb, if not Ketogenic, diet. This may indicate that simply adding MCT oil to a moderate to low-carbohydrate diet, may confer some of the benefits of having a slightly higher rate of circulating ketone bodies without having to follow a strict diet. Again, following this strategy, you can get the best of both worlds: consume a diet high in fibre, while also getting a steady flow of ketone bodies to the brain.
Other interesting areas of research are the use of supplemental, or exogenous, ketones for therapeutic use, however the area is new and not something I currently recommend in my practice (although this may change when more research begins to emerge and better supplements enter the market).
My Plan Moving Forward?
I’m happy that I gave the Ketogenic diet a try, but now I’m back to my more modified Paleo diet, aimed at promoting gut health, optimizing my micronutrient intake, regulating hormones, and supporting my energy levels. I now consume berries and apples, legumes, starchier vegetables and lean proteins more often and aim to get 10 servings of fruits and vegetables a day, with 8 to 9 of servings coming from vegetables, as opposed to fruit.
I currently start my day with a smoothie with berries, an avocado, spinach and protein powder. For lunch I have some sort of protein, fat, and tons of veggies. I eat more often than when I was in ketosis: about 3 meals a day with a vegetable and fat as a snack, or no snack at all in between, depending on my schedule.
My total daily carbohydrate intake falls around 100 grams a day with a net carb intake between 50 to 70 grams a day, depending on the fibre content of the vegetables, seeds, and legumes I’ve eaten that day. I try to get upwards of 30 grams of dietary fibre per day.
I avoid all sugar, including sweeter fruits like tropical fruits, and dried fruits, like dates. I especially stay away from refined sugars, even “natural” coconut sugars and agave. I avoid processed carbohydrates and flours. I mostly avoid grains, except when travelling or visiting someone’s house, getting my carbs from starchy vegetables and tubers, legumes and berries. I continue to avoid dairy (which I’m sensitive to), gluten, and processed industrial oils like canola, corn, and soy oil.
Right now, rather than focussing on macronutrient ratios, I’m directing my food intake towards obtaining the Recommended Daily Allowances of the micronutrients that run all of our cellular reactions, and the fibres that feed a healthy gut microbiota. I use an app called Cronometer to track this.
I definitely eat more fat than before, adding MCT oil to my morning smoothie, especially on days when I need to stay full and focused for longer. I also aim to do at least 12 hours of fasting a day, trying to get in 16-18 hour fasts where I can, ending dinner at 4pm, for example. I no longer do regular long bouts of Intermittent Fasting, particularly not when I’m feeling stressed and burnt out.
Would I Recommend the Ketogenic Diet to Patients?
One of the main tenants of Naturopathic Medicine is “Do no harm”. While it may seem like making diet and lifestyle recommendations are relatively benign therapies, I believe that they do have the potential to do physical and psychological harm, particularly if they are strict recommendations.
Following a strict diet may have health benefits, but it also may isolate us from friends and family, frustrate us and restrict our intake of certain nutrients, like fibre, vitamins and minerals. This is one of the reasons I do not ever advocate a Vegan diet, although if patients are following one already, I believe in guiding them to optimize their nutrient intake.
Furthermore, at least in my personal experience, the cure was stronger than the disease. I probably didn’t need to do the Ketogenic diet for so long; this was evidenced by the hormonal imbalances that I began to experience towards the end of my year on the diet.
However, particularly for patients who are suffering from metabolic syndrome, type II diabetes and insulin resistance or PCOS, there may be some powerful benefits to entering ketosis in order to dramatically reverse metabolic dysfunction. In this case, a modified regime combining Intermittent Fasting and cyclical Ketogenic diets could be beneficial.
Of course, it all depends on where patients are at in their nutrition journeys. Sometimes I meet patients who require, and respond well to, more heroic lifestyle interventions. Other times I meet patients relying on several sugary treats a day to get them through. In these cases, simply tweaking their diet in small ways, using baby steps may also have powerful disease-risk-reversing effects.
In the past I used to suffer from “hanger”, feeling hungry and irritable if going more than a few hours without food. Now my body is adapted to fasting, going prolonged periods without food—and I feel all-the better for it.
When I was a kid, no one ever had to convince me to finish my dinner. Perpetually “hangry” (hungry and angry), I was the Tasmanian devil of snacking, vacuuming up whatever food substances crossed my path, leaving wrappers and crumbs in my wake. “Never get between Talia and her food,” my brother facetiously coined when, like a voracious bull, I would bully my way into the kitchen to fix myself an emergent after-school snack. From the moment I was born, it seems, going more than two hours without eating was a physical impossibility. “I’m sick with hunger,” I would complain whenever my blood sugar levels dipped.
Now I sit here writing this article, in my adult incarnation, comfortably having abstained from eating for more than 14 hours. Whereas before I couldn’t go more than 2 hours without some kind of sugary snack, my body is now adapted to thriving during prolonged periods without food—and I feel all-the better for it.
“Eat a snack every 2-3 hours to keep blood sugar stable and lose weight,” dieticians and nutritionists often advise . However, as we dig into the disease prevention, anti-aging and weight management research, we learn that there may be benefits to going without food for prolonged periods.
We humans spent much of our evolutionary history hunting and gathering with extended periods of food scarcity. Our bodies adapted to survive through, and perhaps even thrive and depend on, periodic fasts. We now live in a society that enjoys food abundance: with 24-hour convenience stores and fast food restaurants at our disposal, we rarely go hungry. This recent lifestyle change may contribute to the increase in the diseases of excess that afflict modern bodies.
Ancient healing systems like Ayurvedic medicine and Traditional Chinese Medicine have long recognized the benefits of fasting for purifying and healing the body. Today, a body of research is accumulating that suggests that fasting may help treat diseases like multiple sclerosis and cancer, reduce the risk of chronic metabolic diseases, such as diabetes, battle dementia and cardiovascular disease, and reverse the effects of aging, helping us live longer.
What Happens During Fasting:
Human physiology fluctuates between two modes: the fasted and the fed state. After eating, a hormone called insulin rises in response to the intake of dietary carbohydrates and, to a lesser extent, protein. Insulin allows glucose to enter cells where it can be used for energy. Insulin encourages the storage of body fat and glycogen—a molecule stored in the muscles and liver that can be broken down quickly for energy. Insulin is an anabolic hormone that promotes tissue building and growth.
Our bodies are in the fed state, or postprandial state, for up to 4 hours following a meal, when blood sugar and insulin levels rise and the body begins to store food energy. 4-6 hours after eating, our bodies enter the post-absorptive state. Insulin and blood sugar levels fall, and blood sugar is maintained through the breakdown of liver and muscle glycogen. At the 10-12 hour mark post-meal, the body enters the fasting state. At this stage, glycogen stores have been depleted and blood glucose is maintained through a process called gluconeogenesis: glucose is created from fat, lactate and protein. In the fasting state, the body taps into fat stores to create ketone bodies, which are used for fuel.
Approximately 24-48 hours after a meal, the body enters a state called autophagy (or self-eating). The body breaks down old, damaged cells into their proteins and reuses them to build new cells or for fuel, through gluconeogenesis. Autophagy has gained the attention of researchers who recognize its benefits for managing inflammation, slowing the effects of aging, and treating various chronic diseases, such as autoimmune disease and cancer—more on this later!
Fasting to Treat Cancer:
Valter Longo, PhD, at the Longevity Institute at the University of Southern California, examined the effects of 2 to 4-day fasts on patients with cancer who were undergoing chemotherapy. The study found that several days of fasting improved the efficacy of chemotherapy, while reducing its side effects, protecting healthy, non-cancerous cells. Healthy cells responded to the periods of food restriction by shutting down, protecting them from the toxicity of the chemotherapy. Cancer cells don’t have such a response, leaving them susceptible to the chemotherapy. “Cancer cells are dumb cells,” says Dr. Longo.
The fasting period not only improved the effects of cancer treatments, it stimulated the regeneration of the immune system through the creation of progenitor stem cells. Fasting cleared out damaged immune cells and cancer cells through autophagy and new cells were regenerated upon re-feeding. Dr. Longo and his team found that up to 40% of the immune system is rebuilt in mice after a fasting and re-feeding cycle.
Fasting Mimicking Diets:
Recognizing the difficulty in going 3 days without food, Dr. Longo developed a 5-day “Fasting Mimicking Diet” that allows for the consumption of about 700-1000 calories per day in the form of small snacks. The Fasting Mimicking Diet is low enough in calories, protein and carbohydrates to mimic the physiological conditions and benefits of fasting like autophagy, ketone body production, beneficial stress response, and cancer cell starvation.
Mice given the Fasting Mimicking Diet (FMD) lost 30% of their body weight through the breakdown of body fat and clearing away of old, damaged cells. When the mice were re-fed, their blood, brain and bone cells were rebuilt. The mice who underwent the Fasting Mimicking Diet had rejuvenated immune systems, decreased incidences of cancer, reduced body fat, improved cognitive performance, decreased inflammation, and increased lifespans.
Fasting to Treat Autoimmunity:
Research in mice showed promising results in using the Fasting Mimicking Diet to treat multiple sclerosis, a debilitating autoimmune condition that attacks the nervous system. When following the diet, immune cells that were attacking the brain and spinal cord were destroyed. Upon re-feeding, new progenitor stem cells were created that repopulated the immune systems of the affected mice, and aided in repairing the damage to the brain and spinal cord. The Fasting Mimicking Diet resulted in a 20% reduction in autoimmunity in mice with multiple sclerosis.
A study that examines the effects of the Fasting Mimicking Diet on humans with Crohn’s Disease, an autoimmune disease the affects the digestive system, are currently underway.
Fasting to Reverse Aging:
Autophagy, the process of removed and recycling old and damaged cells, is a new area of research for reversing the effects of aging. Autophagy alleviates the body burden of senescent cells that have stopped dividing but are still robbing the body of essential nutrients and energy.
When cells become senescent, they release inflammatory mediators, which can damage neighbouring cells and cause inflammation and disease. Cellular senescence is thought to be one of the primary mechanisms by which we age. As we age, more cells become senescent, causing age-related inflammation. A study found that inflammation is the primary factor that drives the aging process, damaging DNA and contributing to various diseases, such as cardiovascular disease, diabetes, arthritis, cancer, and autoimmunity.
The process of fasting and re-feeding stimulates the production of new, healthy progenitor stem cells in the immune system. Mice and human volunteers who underwent cycles of the Fasting Mimicking Diet had decreased numbers of myeloid cells, the inflammatory immune cells that become more numerous as we age, and increased numbers of cytotoxic T cells, which protect the body against viruses and cancer.
Fasting promotes longevity through its inhibition of Insulin-like Growth Factor -1 (IGF-1), a growth factor that promotes cellular growth, and prevents the death of senescent cells. Growth factors are important for growing babies and children, developing fetuses, boosting muscle, and growing new brain cells. However, growth factors like IGF-1 are negatively associated with longevity because of their potential to stimulate the growth of cancer and prevent autophagy. Mice whose growth factor-dependent genes were removed, or “knocked out”, lived 40-50% longer and suffered from less diseases as they aged. IGF-1 is stimulated by protein and carbohydrate intake; it is elevated in the fed state and inhibited when fasting.
Healthy humans who underwent cycles of the Fasting Mimicking Diet had lower risk factors that were associated with cardiovascular disease and diabetes, such as lowered blood pressure, reduced CRP (a marker of inflammation in the blood), and reduced fasting blood glucose levels. These markers remained improved even after the subjects returned to a normal diet, which indicates that fasting may help reduce the risk of chronic diseases, such as diabetes and heart disease, promoting health longevity and increased lifespan.
Fasting for Energy and Resilience to Stress:
Hormesis is the process in which the body’s response to a stressor like the slightly toxic flavonoids in plants, intense exercise, or extreme temperatures, benefits the body as a whole. Hormesis is one of the reasons that exercise and green leafy vegetables are so good for us; they impose minor stressors on the body, boosting its healing properties, and improving resilience.
Fasting, in addition to other positive stressors, up-regulates a stress-response gene called FOX03. When FOX03 is activated, it produces proteins that reduce inflammation, increase anti-oxidant production, repair DNA, and increase cellular energy production through the creation of new mitochondria. Humans with a more active version of the FOX03 gene have an almost 300% chance of living to be over 100 years old.
Fasting also promotes a process called mitophagy. Similar to autophagy, mitophagy involves removing and recycling damaged mitochondria that are no longer able to effectively produce energy. Through activation of the FOX03 gene, more mitochondria are created to replace the old, improving energy production. The creation of new mitochondria only occurs in response to exercise, extreme temperatures, and periods of fasting.
Fasting for Weight Loss:
It doesn’t take a researcher to figure out an obvious truth about fasting: when you don’t eat, you lose weight. Dr. Jason Fung, MD, a Toronto-based nephrologist, prescribes fasting to his obese and diabetic patients. In his book, The Obesity Code, Dr. Fung discusses how the old paradigm of restricting calories for weight loss—eating 1500 calories a day while burning 2000, for example—is out-dated and ineffective for keeping weight off longterm. Dr. Fung argues that fat storage and breakdown are not the result of a simple calories in minus calories out equation, but the performance of a hormonal orchestra conducted by insulin. Insulin stores fat and glycogen, while inhibiting the release of fat breakdown. The body only begins to tap into its glycogen and fat stores when insulin drops during the post-absorptive and fasting phases after a meal. Once it depletes its glycogen stores, the body burns fat as its main source of fuel as long as insulin levels remain low.
According to Dr. Fung, fasting is superior to caloric restriction diets because it keeps insulin levels low for long enough to allow the body to deplete its glycogen stores and tap into fat. Fasting also releases surges of growth hormone, which prevents muscle loss, and norepinephrine, which boosts energy and feelings of well-being. Unlike caloric restriction diets, studies have shown that metabolism increases during and after fasting, preventing weight regain. Dr. Fung argues that fasting can spare muscle, boost metabolism, increase energy, and increase feelings of well-being, making it an effective tool for lasting weight loss.
Ways to Fast:
While the health benefits may be numerous, fasting isn’t easy. The first time I tried a prolonged fast, all I could think about was food. Food was everywhere and the people around me seemed to be eating all the time. My body, accustomed to being constantly fed, wasn’t too happy with the sudden metabolic switch I was demanding from it. Many of our metabolisms have been trained to run on dietary carbohydrate and glycogen as their primary fuel sources, making the first few hours to days of fasting a challenge. However, there are many ways to ease into the practice of fasting. You can obtain Dr. Valter Longo’s Fasting Mimicking Diet kit from a healthcare provider through ProLon, or practice small intermittent fasts, such as Time-Restricted Feeding.
Time-Restricted Feeding:
A researcher at the Salk Institute in Califoronia, Dr. Sachin Panda, PhD, found that restricting eating time had amazing health benefits in mice. Mice were fed an unhealthy diet of lard and sugar. The mice, as you might expect, had shorter lifespans and a variety of health problems: diabetes, obesity, and heart disease. However—and this part is miraculous—when Dr. Panda and his team restricted the time the mice were fed the exact same crappy diet to 12 hours (instead of allowing them to eat whenever they wanted), none of the negative health benefits occurred; the Time-Restricted Fed mice were 70% leaner, lived longer and were free from diabetes or heart disease.
Further investigation revealed that restricting feeding time to 8-12 hours a day, resulted in mice that had less body fat, improved muscle mass, decreased inflammation, increased cardiovascular function, increased mitochondrial function, higher levels of ketone body production, increased cellular repair processes and anti-oxidant production, and increased aerobic endurance. It was when the mice ate, not what they ate, that conferred these health benefits.
North Americans, on average, eat on a 15-hour clock. We seem to eat constantly, stopping only to sleep. To study the effect of Time-Restricted Feeding on humans, Dr. Panda had human participants restrict their food intake to 12 hours a day; if the volunteers had their first sip of coffee at 7 am, they were told to cease all food intake by 7pm. After the completion of the 16-week study, the volunteers lost 3-5% of their body fat without making a conscious change to their diets. The participants reported sleeping better and feeling more energized in the morning. They noted that their overall calorie consumption decreased by about 20% without effort.
Research into Time-Restricted Feeding indicates that allotting at least 12 hours a day to fasting boosts the body’s repair mechanisms, improves digestive function and motility, provides time for the body to switch to ketone body production (which tends to happen 10-12 hours after a meal), improves blood sugar control, regulates appetite, and enhances stress resilience. Taking a break from eating allows the body to invest its energy into repair, rather than digestion. The best part about Dr. Sachin Panda’s research is its simplicity; to obtain all of the benefits, simply avoid after-dinner snacks!
Intermittent Fasting:
Similar to Time-Restricted Feeding, Intermittent Fasting plays with the ratio of fasted to fed hours. Proponents of Intermittent Fasting refrain from eating from 12 to 23 hours within a 24-hour period. A common ratio of fasted to fed time is 16 to 8 hours: fasting for 16 hours a day and eating within an 8-hour window. For example, if breakfast is at 8am, then those following a 16:8 intermittent fast stop eating by 4pm in the afternoon.
Alternate Daily Fasting or the 5:2 Diet:
Studies with mice and human subjects found that alternating daily food intake, or following a 23:1 fast (having just one meal a day) every second day, was effective for weight loss. The protocol is beautifully simple: every second day either fast completely or indulge in only one meal. While people tend to eat more on their “fed” days, they don’t seem to make up the calories that are lost on the fasting days, resulting in an overall reduction in calories and weight loss.
Water Fasts:
It’s estimated that we need to fast for at least 36 hours to get the autophagy benefits, which makes water fasting a powerful therapeutic and anti-aging practice. Water fasting is simple: withstand extended periods, usually 3 to 5 days, but often longer, only consuming water.
The longest recorded water fast was 382 days, performed in 1973 by a 27-year old male who weighed 456 lbs. During the months he fasted, the 27-year old consumed only water and a multivitamin and, according to the study published on him, experienced “no ill-effects”. While water fasts can have amazing therapeutic benefits, it is advised that they be medically supervised.
Ketogenic Diets:
Ketogenic diets are high-fat diets that restrict carbohydrates and limit protein, and can mimic the low-insulin conditions of fasting. Because carbohydrates and protein are restricted, the body is forced to turn dietary fat into ketone bodies, which it can use for energy.
Ketone bodies, especially beta-hydroxybutyrate, produced from either dietary or body fat, have important therapeutic uses. They provide more energy for the brain than glucose, which can have benefits for memory, mood, concentration and cognitive performance. Ketogenic diets have been recommended for treatment-resistant epilepsy, and diseases associated with cognitive decline like Alzeimer’s and Parkinson’s. More recently ketogenic diets have been recommended for mental health conditions, such as depression and anxiety.
Ketone bodies also help cells resist oxidative stress, preventing cellular damage, which makes ketogenic diets of interest to cancer researchers because or their ability to starve cancer cells of protein and carbohydrates, while fuelling healthy cells.
Ketogenic diets can deliver many of the benefits of fasting because of the low-insulin, low growth factor conditions they induce. When a person becomes “keto-adapted”, able to burn ketone bodies efficiently for fuel, the transition to fasting is easy. For this reason, ketogenic diets and fasting often go hand-in-hand.
Cautions:
While fasting can deliver many health benefits, it can impose a temporary stress on the body for those who haven’t adapted to ketosis or prolonged periods without food. Therefore, it’s important to fast under the supervision of a medical professional, especially if deciding to embark on an extended fast.
Before deciding to fast, the individual’s energy levels and vitality, health status, hormone regulation (those who are taking insulin should practice extreme caution when fasting), age, health history, and health goals, should all be considered. A woman of fertility age will have different health goals than a 72-year old woman with type II diabetes. The former may want to preserve body fat and promote fertility and ovulation, while the latter may want to reduce her insulin and growth factor levels, and lose weight in order to promote health longevity.
Fasting may not be appropriate for everyone. For example, those who are underweight, pregnant, breastfeeding or suffering from an eating disorder should not fast. Fasting in women of reproductive age has the potential to produce hormonal imbalances such as hypothalamic amenorrhea (irregular or absent menstrual cycle). Fasting can exacerbate or cause dysregulation in stress hormones, particularly cortisol, known as “adrenal fatigue”, and potentially effect thyroid function, as a result of the body’s starvation response. Fasting while under the pressure of chronic mental and emotional stress is probably not a good idea. Working with a professional and listening to your body are key elements to doing fasting right.
However, when used correctly, it can be a simple, free, powerful therapeutic tool for healing the body, treating chronic disease, and promoting longevity.
A naturopathic doctor offers tips for navigating the often contradictory and confusing world of modern human nutrition.
As soon as we start to feel comfortable with our grasp of human nutrition—which foods are healthy, which ones are unhealthy, and how to eat a balanced diet for optimal health—a new study gets published that shatters our once-felt sense of confidence.
Confusingly contradictory health claims constantly appear in the news, like the American Heart Association’s vilification of coconut oil. The vegan diet-promoting documentary What the Health, currently trending on Netflix, turns convention on it head by assuaging our fears of refined sugar, instead blaming animal protein, eggs and dairy for the worldwide diabetes epidemic. Even I find myself doubting the 15 years I’ve spent studying and working in the field of human health every time paradoxical nutritional data is uncovered.
When I was in high school, I remember patting myself on the back for choosing fat-free options, hoping the leanness of my food would encourage leanness of my flesh. I gave up meat, understanding that I was making a healthier choice; I was told that meat, fat and cholesterol were all culprits of heart disease. I tried giving up eggs and dairy, trying on veganism in order to minimize my impact on the environment. I did an elimination diet while at naturopathic medical school, removing gluten. When my colleagues started reading about the Paleo Diet—grains were the enemy all along, while meat was good for us—I slowly began to embrace a “primal” diet. I started removing myself from the influence of decades’ worth of poorly conducted research and began welcoming saturated fat back into my life. Fat was fine; it was carbs that were the root of all disease. Atkins had gotten it right from the beginning. Eventually I cut out all carbs and sugar and tried a ketogenic diet, eating lots of fat, moderate amounts of meat, and some vegetables.
My journey brings me here, to my Facebook newsfeed, which has been infiltrated with articles condemning coconut oil and saturated fat for raising LDL cholesterol and contributing to cardiovascular disease. “But I thought it was healthy!” Friends, family and patients cry, tearing their hair out in confusion over the news. Some patients have watched Netflix’s What the Health, a documentary from the makers of Cowspiracy, which asserts that sugar’s link to type II diabetes may not bas as strong as previously thought.
The flip-flopping is frustrating for sure, especially for those of us who are committed to living healthy lives for as long as possible. But before we toss our tubs of coconut oil and liquid stevia drops in the garbage and start pulling out the white sugar and margarine again, we should consider how nutritional research is conducted. Let’s entertain different traditional, holistic viewpoints on food and nutrition in order to learn how to feed our bodies optimally.
The Problem with Nutritional Research
There are several problems with how we study nutrition. One of the challenges lies within science itself; scientific studies, by their very nature, attempt to isolate all of life’s complexity down to two variables in order to study them while nutrition, as it’s practised in the day to day lives of human beings, consists of an infinite number of important factors that are often not taken into account.
Most human diet studies are epidemiological. Researchers follow populations of people for years, tracking what they eat and noting how many diseases they get over time. They then synthesize the data to create story. For instance, how much fibre did the people who had heart disease eat? Did those who avoided gluten have a higher risk of diabetes?
In order to assess dietary intake, most epidemiological studies use Food Frequency Questionnaires, or FFQs. Study participants are asked how often they eat certain foods (such as chicken) per week. They are asked to check a box, from “none” to “more than 6 times a week”. As a clinician interested in how my patients’ nutrition may be affecting their health, I assess diet in a few different ways. In the initial appointment, I ask my patients to recall everything they’ve consumed in the past 24 hours to get a rough overview of how they typically eat. Then, between the first and second appointments, I have my patients track their foods in a diet diary over the course of one to two weeks. The accuracy with which my patients report their food intake from the day before depends on their memories, perceptions, and diligence in recording, among other things, and this can compare drastically with their diet diaries that are recorded in real time. Not only do the mundane memories of daily meals evade us, we are often found guilty of deceiving ourselves based on how we feel we should be eating, rather than how we actually are. I find it hard to believe that participants are filling out FFQs accurately.
Also, the stories that epidemiological studies create from the data establish correlation, not causation. With many correlations (like one of my favourites: ice cream consumption and drowning—both occur in summer) there is often no direct relationship. If assessing the connection between fat intake and diabetes, a good study will take into account all meaningful variables, such as how often the participants exercised, or whether they had existing cardiovascular disease. However, considering all the possible factors that might effect the relationship is virtually impossible. For instance, what was the status of the gut flora of the participants? What was their antioxidant or mineral status; were they magnesium deficient? Were they consuming meat that was pasture-raised or corn-fed? How high was their daily toxic exposure? Did they experience chronic stress? How well were they sleeping? What were their levels of inflammation like? And so on.
The trouble with studying nutrition and disease is that, when it comes to health, context matters; context may be all that matters. For instance, while we know that barbecued meat can produce carcinogens that potentially lead to cancer, a study found that when the meats were seasoned with rosemary the carcinogenic load of the meat was neutralized. It’s nearly impossible to form a complete picture when we insist on studying isolated factors, leaving out many important details.
Animal studies, while allowing for tighter control (we don’t ask mice to report their diets, we just feed them), are also flawed. Firstly, mice and humans are completely different species with different nutrient requirements. However, animal study designs can also be problematic. Animals are given lard and white sugar to assess the effects of a high fat, high sugar diet on their health—their diets are exaggerated for the purpose of the study. Human beings, however, eat burgers, cake, and ice cream. We don’t eat single nutrients like fat and sugar, we eat food. If a mouse gets sick on a diet of lard and table sugar is it because of the foods it was eating, something he wasn’t eating, or some other unforeseen factor? There may be a huge difference between eating a high-fat diet with no vitamins and minerals, and eating a high-fat diet that contains complete nutrition.
A third method for studying human nutrition is through randomized control trials, or RCTs. In RCTs humans are randomized into a group that receives an intervention, like a dietary plan, or a control group that is told to follow some other diet or just eat normally. These trials control as many variables as possible, but the timeframe for these studies is often too short to garner meaningful information about health outcomes, which may take years to manifest. It is also difficult to get participants to stick to meal plans. Further, it’s hard to establish consensus for each diet being studied. For example, when assessing the nutritional merits of the Paleo diet, how many servings of vegetables should participants be told to consume? How many grams of fat? What types of fat?
It’s important that we can use studies to seek answers to our questions about the relationship between nutrition and health. However, due to its many limitations, nutritional research can only take us so far. This is why one study may indicate that high sugar diets contribute to diabetes risk, while another study finds no relationship.
A New Food Guide
If we can’t trust research studies to tell us what to eat, who do we trust? Surely we can’t rely on Canada’s Food Guide, with it’s outdated recommendations that simultaneously overemphasize grains and dairy, while continuing to uphold archaic views on fat. Primarily created in the 40’s to help Canadian families ration their food during the war, the Food Guide was not necessarily created to promote the optimal health of those who follow it.
Dr. Ray Cronise, a former NASA scientist, outlines a food pyramid in his paper to help organize food into nutrient content. I often borrow his pyramid to depict nutritional balance to my patients.
Ray’s pyramid is composed of four circles, three that form the base of the pyramid, forming the three main groups of macronutrients: protein, fat, and carbohydrates, and foods that are composed primarily of each. The circle at the top represents the foods that contain a higher number of micronutrients: vitamins and minerals, which are mainly non-starchy vegetables like leafy greens.
Protein-rich foods include meat and animal products, including fish, eggs and dairy. Fat-rich foods include nuts, seeds and oils like coconut oil, avocado and olives. Carbohydrate-rich foods include starchy vegetables like potatoes, grains, legumes and fruit. Ray concedes, however, that none of these foods are composed of a single macronutrient; animal products often contain a significant amount of fat; nuts and seeds also contain protein and carbohydrates; and legumes and grains contain some protein as well.
Ray points out that most diets, particularly the Standard American Diet, is bottom-heavy. North Americans generally over-consume macronutrient-rich foods that are higher in fats, carbs, proteins, and calories in general, and under-consume micronutrient-rich foods like fruits and vegetables. Because of this, North Americans consistently fail to meet the levels of vitamins, minerals and antioxidants essential for optimal bodily function.
It seems that even “healthy” diets tend to focus on the bottom of the pyramid, restricting certain groups of foods while making up the balance by over-emphasizing others. Paleo and low-carb dieters often fixate on the right side of the pyramid, including animal products, nuts and seeds, but avoiding grains and legumes, while vegan and vegetarian diets concentrate on the left side of the pyramid, eschewing all animal products and getting protein from grains, legumes and nuts instead.
One thing all healthy diets seem to emphasize, however, is fruit and vegetable consumption. When studying the merits of a vegan or paleo diet, it is the non-starchy, micronutrient-rich vegetables that may confer most of the health benefits, regardless of the carb, fat and protein content. Therefore, Ray recommends focusing on the top of his food pyramid, eating as many vegetables as possible, while eating a balance of foods from the base.
Since we rarely eat pyramids, I often depict this balance for my patients using a plate. I divide the plate into four quarters. One half of the plate is dedicated to colourful vegetables, with at least a full quarter dedicated to greens. The other two quarters of the plate are divided into starches: grains, legumes, tuberous vegetables, and proteins: meat, dairy, eggs, fish, or legumes. Oils and fats can be used to cook with or added to the meal in the form of avocados, nuts and seeds.
Listening to the Body as Guide
So, while Ray’s advice to eat as many green and colourful vegetable as we can while eating a balance of the foods at the bottom of the pyramid is sound, how can we establish what the right balance is for us? Many of us will have vastly different requirements for the macronutrients: carbs, fat and protein. My body has an energy demand that is different from that of my 6′ friend who lifts weights daily, or my 90-year old hypertensive, mainly sedentary Italian grandmother. As a naturopathic doctor, who believes in an individualized approach to health, I tend to reject top-down dietary recommendations that ignore the variabilities among people.
A friend of mine, having damaged his health through a string of restrictive dieting, argues that all food—even refined sugar and saturated fat—has a place in a healthy diet. He believes our bodies are designed to crave fat, protein and carbohydrates in ratios that promote optimal health. He writes in his book that we can eat whatever we want as long as we eat intuitively and avoid foods laden with “fake” flavours and processed oils, like corn oil, that confuse our internal cues and hunger signals. He also argues, like the filmmakers in the Netflix documentary, What the Health, that there is no evidence that refined sugar causes diabetes, and that diets based on avoidance of certain foods are detrimental for health.
While I’m not convinced that refined sugar deserves to be completely cleared of all charges, I agree that mindful and intuitive eating may be the key to maintaining balance. Healing with Whole Foods by Paul Pitchford places awareness and physical activity at the base of its Integrative Food Pyramid. The idea is that we need to first establish the foundations of movement and mindfulness before we begin to talk about food intake. As my friend says, perhaps the key is tuning in to our own internal physiological and emotional cues through mindfulness, paying attention to hunger and cravings, rather than measuring calories, carbs, protein, or fat grams.
Following our internal cues may be difficult, as the book TheDorito Affect outlines. The author points out how certain foods are engineered to override our hunger and satiation signals and monopolize our cravings, leading us to overeat. Therefore, if we’re going to follow our body’s signalling, mindfulness is a requirement, but so is following the advice of Michael Pollen, author of The Omnivore’s Dilemma, who famously tells us to “Eat food. Not too much. Mostly Plants.”
Pollen urges us to stick to foods that resemble something we might encounter in nature: eat foods our grandmothers would recognize; purchase foods that come from a plant, not foods that are made in one; and to stick to whole foods or packaged foods with five listed ingredients or less. Pollen also encourages us to cook and prepare as much of our own foods as possible. Do you have a craving for potato chips, ice cream, or dark chocolate? Feel free to indulge, as long as you make it yourself using the raw, natural ingredients. The theory is that, when the body is given clean, whole food, it regulates its hunger and satiety signals to communicate to you exactly what it needs.
Heal the Individual
When it comes to whole foods, I believe that there are no “good” or “bad” foods, generally speaking. Observational studies that examine how traditional societies ate suggest to us that saturated fat, animal protein, dietary cholesterol, and carbohydrates all have a place in a balanced diet. However, when it comes to diet, especially therapeutic diets, it’s my job to consider the individual and their health context: there are no good or bad foods, but some foods are better or worse for certain people, and some may even be better or worse for certain people at certain points along their health journeys.
When I am helping my patients calm inflammation, heal their digestive systems, clear their skin, or manage autoimmune disease, I often recommend identifying food sensitivities and eliminating those foods from the diet. Oftentimes these foods need to removed only temporarily, but sometimes foods may need to be removed indefinitely. Patients with insulin resistance, such as in the cases of obesity, PCOS, diabetes or metabolic syndrome, often do well on a low-carbohydrate diet to restore insulin sensitivity. Again, these anti-inflammatory, reduced-carbohydrate diets may only be required until hormonal balance is restored. Older adults concerned with promoting longevity, or patients undergoing cancer treatment, may do better restricting protein to lower their levels of growth factors, while athletes and stressed out adults may require higher amounts of protein to promote muscle building, or to synthesize mood-regulating neuro-chemicals. A woman who is stressed, depressed, exhausted and iron deficient may feel much better increasing her dietary intake of red meat to help regulate her nervous system. Another woman, with a family history of colon cancer, may do better avoiding it.
Endless factors need to be taken into account when we consider which dietary style is right for us. Our health goals, health status, nutrient status, digestive system health, immune system health, liver functioning, insulin sensitivity and hormone balance, levels of stress, toxic load and inflammation are just some of the things that I consider when making lifestyle recommendations for my patients. Lifestyle preferences, tradition, culture, religious backgrounds, cooking abilities, time constraints, and other factors, will also all play a role in our food choices and eating habits.
Our emotional connection to food and our ethics also matter. While veganism is certainly not a diet I recommend, if consuming animal products is out of line with one’s morals, then following a vegan diet may be the healthiest way for them to live in accordance his or her beliefs. Similarly, someone with a history of disordered eating may need to lift all food limitations, even junk food, in order to heal his or her relationship with food and hunger.
Investigations into the eating patterns of traditional societies tell us that human beings thrive on a variety of different diets. Optimizing diet for the individual goes beyond following the latest research or government and industry-funded health recommendations. It involves eating a variety of natural, whole foods, learning to pay attention to the body’s hunger signals, and even working with a health professional who uses diet to help promote health and manage disease on an individual level.
Current research suggest that gluten can increase systemic inflammation, contributing to a worsening of mental health symptoms, as well as other inflammatory conditions, such as pain and autoimmune disease.
Transcript:
Hello, you guys, my name is Dr. Talia Marcheggiani and I’m recording to you guys from my clinic in Bloor West Village. It’s call Bloor West Wellness Clinic, in Toronto, Ontario, Canada. And today, I’m going to talk to you guys about how a gluten sensitivity might be the underlying cause of your mental health conditions or other inflammatory conditions such as arthritis, migraines and digestive symptoms like IBS.
One of the reasons that I’m recording this video is because gluten is a really hot topic in the health and wellness industry and you’ve probably encountered your own versions of gluten-free food, or articles on the internet about how gluten is this evil toxin and there’s a lot of misconceptions around this and so I’m going to just talk a little bit about what gluten is and my own journey with cutting gluten out of my diet and how I came to that space where I was willing to do the experimentation and cut it out and see what my results were.
So, gluten isn’t a toxic substance per se, I mean there’s opinion around this in certain circles based on what it can do and how it affects the immune system and the results it can have on digestion, if you have sensitivity to it. But, what gluten is, is it’s a protein complex; it’s a bunch of proteins that are found in grains—wheat, rye and barley. And the protein complex consists of different proteins called gliadins. I might use gliadin and gluten interchangeably; it’s the same thing.
And, so, there is a health condition called Celiac Disease that’s a very serious health condition; it’s an autoimmune condition where the body attacks an enzyme called transglutaminase that’s involved in processing gliadin molecules. So this is not a reaction to gluten, per se, it’s an autoimmune reaction that’s caused by, that’s caused any time the body comes into contact with gliadin or gluten.
And celiac disease is a very serious health condition, it affects about 1% of the population, but there’s some room there for debate. So, some people think that you acquire celiac disease as you go on, and there’s evidence for that. And also, some people think that there’s a great underestimation of how many people are affected by celiac disease, that the number is higher than 1%, but that a lot of the cases do undetected.
And so celiac disease is diagnosed by blood tests. We’re looking at transglutaminase and endomysial antibodies, but the gold standard diagnosis is doing an intestinal biopsy. So, that’s how you find out if you have celiac disease, or not. So some people have done a blood test and they’ve tested negative for celiac disease, but are exhibiting some of the symptoms and so an intestinal biopsy will tell you yes or no definitively whether you have it or not.
Now, whether someone with celiac disease should avoid gluten or not isn’t really the debate here, I mean, that’s obvious. So, if you have celiac disease you have to avoid gluten 100%, it can’t be in your diet. You can’t even have a crumb of it. You have to use special toasters, or toaster bags, for your gluten-free toast. You have to make sure that your oatmeal hasn’t been contaminated by gluten. You can’t shop at Bulk Barn because there could be cross-contamination with gluten-containing substances. So, it’s almost like an allergy, you really have to be careful about coming into contact with gluten. And when people avoid gluten, if they have celiac disease, then that disease is managed.
So, whether someone with celiac should avoid gluten or not is not up for debate. What is is in this grey area, which is what you’ll be reading about online and that you’ll hear certain professional say is kind of myth, is this idea of non-celiac gluten sensitivity or gluten sensitivity. These are people who don’t have celiac disease, but for one reason or another notice that, when they take gluten out of their diet, they feel better. And when they reintroduce gluten they feel worse. And the symptoms are complex, just like in celiac disease. So, in celiac, people can get rashes, they can get joint pain, they can experience brain fog, they can experience brain damage, they can get arthritis, they can start getting other conditions such as thyroid conditions and so the symptoms are so wide-spread because of the inflammation that is triggered by eating gluten, and this is also the case with non-celiac gluten sensitivity—people who avoid gluten.
So, my story was that when I was a student at the naturopathic college, one of the things that I was exposed to in first year was this idea about elimination diets and leaky gut, which I’ll explain in a bit more depth, but you might have heard me write or talk about leaky gut. And, this idea that things like gluten or dairy could be contributing to some symptoms that I was experiencing and that a lot of patients were experiencing, and that taking these foods out in a systematic fashion, so doing a really clean diet, or a “hypoallergenic diet”, or a diet that’s basically chicken, rice and maybe some spinach, that that would heal a lot of the complaints that I and many others were experiencing, but that probably gluten was implicated in that.
So I was really resistant to this for at least two years. So, I wasn’t an early adopter at all to this idea, a lot of my classmates got the information, they went out and they started eliminating a lot of these foods from their pantries and they tried eliminations just for fun—well, for fun and also to experiment and to heal themselves and to “walk the talk”, as we say. But, I was living with my Italian grandmother and I would have toast for breakfast, I’d have pasta for probably lunch and dinner. I was getting gluten in my diet a lot and the idea of taking it out and resisting those familial pressures was—I just didn’t want to deal with it.
But, throughout the first couple of years of school I was also getting migraines on an almost weekly basis. And these migraines would take me out for the entire day. So, for the entire day I’d be throwing up, lying in the dark with a cloth on my head, trying to take some Advil, or something to mitigate it, but this was a chronic thing that I was going through.
Best case scenario, I’d get these once a month, but they were things that I was getting often. And I also had this life-long problem with bloating, these kind of IBS symptoms, like gas and bloating and, when I first started the naturopathic college, it was amazing to me that that was something we were talking about, because I’d kind of written that off as just being something, a peculiarity or particularity about my body that I’d just have to live with and it didn’t even occur to me that something that wasn’t considered a “disease”, per se, could be something that warranted attention and that had a treatment that went along with it, and a cause.
So I was kind of intrigued by that idea, like “oh, you mean I don’t need to be bloated?” and that, even though I’m not sick, like I’m healthy, I don’t have a disease, I don’t have high cholesterol or some of autoimmune disease, or type one diabetes, or something like that, but that the idea that an imbalance, or symptoms that were uncomfortable could be treated was totally new and exciting for me.
And so there was this intrigue in being gluten-free, but also this resistance to it.
And then, I think I was at a talk at school where we were given—it was sort of an information session, we were given free samples of a 7-day detox that involved shakes. And so, I did that because I had this free box, probably worth about $80 and I just decided, “ok, well I’m going to do this detox, it will be good for me. It will be sort of my introduction to eliminating a lot of these foods. It’ll be easy.” And it was really difficult. The first two days I had massive headaches as I was withdrawing from a lot of the things I was addicted to, such as caffeine, sugar and, probably, gluten, as well. But that sort of set the stage because I felt a lot better after that process, even after only that week of eliminating the foods. And so, when I started introducing the things I was eating normally back in, such as pasta and bread, I felt a lot worse. So, that discrepancy kind of woke me up to the idea that maybe these foods aren’t that great for me. And then I began a process of elimination and noticed really good results. I mean I don’t get migraines any more. It’s very very rare, and it’ll be a combination of weather and other factors and stress and overwork. But, that once-a-week, or even once-a-month, being in the dark with a cloth on my head, no noise and vomiting all day: that’s in the past. And now when I reintroduce gluten I can maybe tolerate a bit of it, but I definitely notice a difference in my energy levels, in my digestion, and just in my mental functioning and in my mood when I make a habit of having it more often. So, I’m basically grain and gluten-free and have been so for about 4 or 5 years.
So, why is gluten bad? Why gluten? Why is that an issue? The obvious answer is that it’s so present in our society. So, in North America, gluten is one of the main staples in our diets. So, pasta for lunch, bread or a sandwich for dinner, and toast for breakfast, or cereal. We’re getting gluten as a main source in our diet, in wheat, very often. And so, when we’re exposed to certain foods continually, we become more susceptible to an immune response against those foods.
But also, gluten has, we see in the mechanism of celiac disease, there are these, this genetic predisposition to react to gluten. And so on immune cells, and we know that our digestive system is the gateway between our bodies and the external environment. And so, how our immune system kind of “educates” itself is by sampling things from the environment and deciding what’s us—and we shouldn’t attack ourselves, because that creates an autoimmune issue—what’s us, what’s ourselves and what’s food, what’s useful to the body, what’s supposed to be incorporated into the body as fuel—and what is not helpful for the body, what is toxic, what is foreign, and what we need to defend against, like bacteria and viruses.
So, our digestive system is kind of involved in sampling from the environment, deciding and showing those pieces of the environment to the immune system, and letting the immune system decide what it’s going to do about these things.
So, when we’re eating foods we’re kind of presenting them to the immune system. And our immune cells have different receptors, so they’re called receptors, but they’re sort of like, you can describe them as like locks for keys or little sort of antennae that feel out the environment. And so people with the receptors, HLA-DQ2 and HLA-DQ8 receptors, on their immune cells, those people tend to react and to connect those receptors with gliadin molecules, so gluten molecules, and that signals an immune response from the body. And when the body thinks it’s come into contact with something that it needs to trigger an immune response against, so that means something foreign, something threatening to us and to our health, then a whole inflammatory pathway starts to take place.
So, think about when you get a cold. You come into contact with the virus and the reason that that virus doesn’t kill us is because our immune system reacts to it. When you get a cold, depending on what virus you’re in contact with, you might get the swollen throat, and the pain, and maybe a fever, and maybe some mucus production, some runny nose. You might feel tired because it takes a lot of energy to mount an immune response like that.
So, when we’re experiencing inflammation, it’s really useful for us, because we’re killing off the things that could kill us, basically we’re at war with something from our environment, but it also doesn’t feel great to be in that state. And so we get into trouble when we’re in an inflammatory state and it’s not for the right reasons, like that we’re trying to attack something (acutely) and get rid of it.
So, a lot of people have these receptors. So even though only 1% of people react to gluten in the sense of celiac disease, about 30% of people express these HLA-DQ2/8 receptors on their immune cells. And so, coming into contact with gluten on a regular basis could be problematic for these people and it could trigger some inflammation.
Another thing that gluten does is create a leaky gut situation. So, I’ve talked about leaky gut before. Our intestinal cells, so our intestine is this long tube from our mouth to our anus, and it winds around and it goes from mouth to esophagus, to stomach, to small intestine, large intestine, and then rectum and anus, and different things happen along that process. And in our small intestine, we have these really long, they’re kind of like cylindrical cells. And, on one end, on the end that’s in contact with what we eat, there’s these little fingers, these villi that reach out into the environment and that maximizes our ability to absorb the things that good for us—the foods that we eat. And, in between—so, the villi kind of control, ok we’re going to break down the carbs, and we’re going to break down the amino acids, from proteins and we’re going to break down the fatty acids, and we’re going to absorb all of the ions and the minerals and the vitamins and we’re going to control how we take them in. We’re also going to control how we take in foreign substances, because we’re going to, remember, show them to the immune system and say “take a look, this is what’s in our environment. This is what you guys might need to prepare yourselves to defend against if this becomes a problem for us.”
And so, we really control, tightly, what we’re taking in through our intestine. So our intestine doesn’t just want to open up the gates and let whatever is outside in, it’s got these really specialized mechanisms for letting certain things into the body. And, so, between these intestinal cells. You imagine these cylindrical cells, almost like a hand, with little fingers, and they’re lined up all along your intestine. And between them are something called tight junctions. And so those, they might become more or less permeable depending on the state of the gut, and that’s controlled by something called zonulin.
Zonulin will open up that permeability and let things in between the cells. And lower amounts of zonulin will maintain a more closed environment. And so one thing that gluten has been shown to do, or gliadin, is increase levels of zonulin, which opens up our intestine to the external environment. And think about the things we eat. Think about the things that swallow, by accident or intentionally, the things in our environment that are toxic, or giant pieces of protein from foods. So, protein in and of itself can cause an immune reaction. We have children that are deathly allergic to peanuts and other nuts.
So, it becomes problematic when we have all this stuff just entering our body. And so gluten opens up the gut to allow all these things to enter the body. And so we end up mounting an immune response to things that would otherwise be harmless to us, like dairy, or eggs, those kind of things that are actually nutritious and helpful for our bodies. So, we start to enter this state. When we’re in a leaky gut state we start to enter a state of inflammation. And inflammation has widespread effects. In my case it was migraines and bloating and digestive symptoms, a foggier mind, foggier brain and lower mood as well. And in some people it can be bipolar disorder. It could be worsening of symptoms on the autism spectrum. It could be depression and it could be anxiety. And when we’re in that inflammatory state we have higher amounts of something called, they’re like excitotoxins, or endotoxins. And so these are toxins like lipopolysaccharides, or LPS, as it’s most often referred to, that trigger anxiety, they activate the limbic system, they activate the amygdala; these are fear centres in our brain.
We also have something called the Blood Brain Barrier (BBB). And that’s really similar to the intestinal barrier with the tight junctions, and that prevents things from getting into our brain that are in our bloodstream. So, it’s like we have this second wall of defence because our brain is so important to our survival and fluctuations in our brain chemistry have really disastrous effects. So we have this extra sort of layer called the BBB that prevents things from getting into our brain. And when we’re in a high inflammatory state, like when we’re exposed to gluten, we get these cross-reactions where what keeps our blood brain barrier intact starts to separate, so we get this leaky brain picture. So we’ve got a leaky gut and also a leaky brain happening. And so we’re getting these toxins, and we’re getting inflammatory mediators entering the brain.
And more research into depression and other mental health conditions has shown that inflammation might play a giant role in low mood. There was one study done with patient who were hospitalized for bipolar disorder. So, these were people who were in a psychiatric facility. And they measure their blood for antibodies against gliadin. And they found that there were elevated antibodies in these people. So, there wasn’t a control group, they weren’t testing against non-bipolar, or people that didn’t have a bipolar diagnosis, but they found that every single patient, who was diagnosed with bipolar disorder and was hospitalized, so their symptoms were severe enough to require hospitalization, had elevated levels of antibodies to gliadin. Then they retested them some time later and found that having high levels of gliadin, or even further rises in gliadin antibodies, predicted whether they were rehospitalized. So, we can infer from that that their symptoms worsened. And so we know that there is this connection between mental health conditions, you know, depression and anxiety and bipolar and even psychosis (and gluten sensitivity). Another study showed that there were high levels of antibodies in people who had psychosis and psychotic symptoms.
So, we know that there is this connection with mental health and with inflammation and that this inflammation can be worsened by a gluten sensitivity or gluten reactivity and that maybe 30% or more of people are susceptible to reacting to gluten in some kind of way. And that gluten just in and of itself might cause this leaky brain situation or leaky gut situation. So, one thing I do is that I don’t do this with every single patient that I see who comes in with depression or anxiety or stress. I mean I don’t jump right into prying gluten from their hands, because my own experience was that it took me literally two years to think about removing it and I had to come to it on my own. But, I might plant the seed, or we might do something like a trial run. Especially someone who’s got mental health symptoms, or is coming to me for mental wellness, and they also have digestive symptoms. I mean, those two things together are a clue that doing some elimination diet, or some leaky gut healing or removing foods like gluten could be a good idea.
But I might present the option to them. We find that most treatment does really need to have 100% compliance rate. So, some patients will come back and say, “you know, I kind of took gluten out, maybe 70-80%” and that’s really great, because I think that it sort of sets the stage for creating a gluten-free lifestyle and doing a gluten-free trial, but really what the research is showing is that we need to 100% take it out to allow the gut healing and the brain healing to occur and to lower those inflammatory mediators.
But, the good news is that it usually takes about 2 to 4 weeks to get symptoms to really come down. So, it’s not like you’re on this trial for life and you can go back to your pasta—if you don’t notice any change after 2 to 4 weeks, at all, then you can go back to your pasta with the peace of mind that this isn’t an issue for you. But, if you do notice some improvement after removing it, then it is something that we can investigate either down the line, when you’re ready, or something that you might want to consider. It’s sort of like planting that seed. But, I don’t pry out of my patients’ kicking and screaming hands. It will be something that we might work on down the road, and something that is always kind of on the table or on the back burner for future attempts and experimentation.
And so, the gold standard, when it comes to treating gluten sensitivity, is just to do an elimination, so take gluten out of your diet for about a month, 100% out, as best you can. There are blood tests that you can do and those can show an elevated antibody response to gluten or gliadin or wheat as well as other foods. The one I do on my patients looks at about 120 different foods. And this is great because having a piece of paper that shows you what your immune system is dealing with in the moment that you got the blood work done is useful. And people tend to, when it’s a blood test, it tends to hold more authority than simply the subjectivity of symptoms. But, really, the best way to see how gluten affects you or how certain foods are affecting you in your immune system is to do an elimination diet, remove it 100% from your diet, give your body some time to heal and then reintroduce it and see what it does to you once you’ve healed from the state that it’s put you in.
Doing that removal is important because the antibodies are only one part of the immune system and so when I’ve done a food sensitivity test on myself, I felt crappy because you have to eat the food for a while. So I was reintroducing gluten into my diet and I didn’t have a high gluten antibody. I had antibodies to other foods, but not gluten. So I kind of psychologically was like, “well, I guess I’m ok to eat it, then.” And went back to eating it a bit more regularly and then experienced really terrible symptoms and my mental health took a decline and then I had to take it out again.
So, the labs don’t necessarily tell the whole story. What does tell the whole story are your symptoms. So, taking gluten out for 2 or 4 weeks is what I recommend most people do. And, so how do you take it out? So, really what the goal is, because, and I’m saying this piece now because there were some articles that were floating around, it was a few months ago, but I’m sure they’re still around, that said, “going gluten-free is unhealthy. It’s dangerous.” And I was really confused by that because I was like, it’s not like wheat is this really important food in our diet that’s giving us all kind of nutrients. We fortify grains with things like folic acid and other B vitamins, like riboflavin. But, they’re not super nutritionally dense, and it’s not like we have a calorie deficiency where we need to get more carbs and calories. I’m not telling people to avoid spinach, or something that is really giving them a lot of nutritional currency, so why would it be harmful to take gluten out?
And then I realized how it’s often being taken out. So, you go to the grocery store and you find that there’s a whole gluten-free section. They basically have gluten-free breads or gluten-free Oreo cookies. And those gluten-free Oreo cookies are for, like, celiac children that want to join in with the rest of the group. They’re not like, “oh, I’m eating these gluten-free Oreo cookies. These are a healthy choice that I’m making.” It’s a substitute for a junky food. You’re substituting one junky food for another junky food, but the only thing is that you’re still maintaining your gluten-free status while on the substitution.
And when it comes to gluten-free breads vs. whole grain breads or whole wheat breads. Probably whole wheat breads have more nutritional bang for their buck; they’re higher in fibre, they have more nutrients. And gluten is a protein, which is what causes the immune system reactivity that it does, but if you don’t react to proteins, they’re healthy for us and we need them, because they contain the amino acids and they fill us up, and they do all the other things that proteins from other foods do. So, usually gluten-free bread doesn’t have very many proteins in it.
So, yeah, if you’re choosing between nutritional value of a gluten-free bread versus a whole wheat bread, then the whole wheat bread is better for you. So, we see this in people that do gluten eliminations and they’re kind of like, ok I’m going to take my wheat pasta and I’m going to have rice pasta instead. I’m going to take my gluten-free toast in the morning, or my gluten toast, my wheat toast in the morning and have gluten-free toast instead. So, that’s not the healthiest way to go about it. It might be a good way to transition when you’re trying to do an elimination. It gives you peace of mind, it allows you to still have your Oreos. It’s not creating a giant change, then that could be helpful. But really what we’re aiming to do is not just substitute wheat products, or gluten-containing products, for non-gluten-containing products and leave it at that, we’re trying to shift into a more traditional diet, like a Mediterranean diet or a Paleo diet, that’s higher in the fruits and the vegetables, and that’s higher in the healthy fats and that’s more protein-rich, and that the proteins are from better, cleaner sources. So, that’s the end goal. So, it’s not that we’re happy with patients eating rice flour and tapioca bread. It’s about switching to a cleaner and more sustainable diet that our bodies evolved to thrive on.
However, the immuno-reactivity of gluten is really what we’re trying to deal with when we’re going on a gluten-free diet, especially the 2 to 4 week trial run. And so what you’re doing on that 2 to 4 week period that’s allowing you to stay on gluten, if that involves gluten-free rice bread, then that’s another story and I think, as a naturopathic doctor working with people who are struggling to get rid of gluten and see if that’s an issue for them, I think that’s ok for the short term.
So, it’s not that going off gluten is bad for you, it’s how we do it. Are we changing our habits for better ones or are we kind of sustaining some of the same Standard North American Diet habits and just cutting the gluten out and thinking that that’s healthy for us, or that that’s going to cause weight loss, or whatever.
No, this is a different thing that I’m talking about. I’m talking about gluten as a root cause of inflammation that then leads to psychiatric disorders, such as bipolar, depression, and anxiety.
And, so one thing I’m going to say as well is that sometimes it’s not enough just to take out gluten and so what I do—or other foods that are suspect, right, so dairy could be another culprit in this or things like eggs, or soy. There’s many things that we could react to. But we often start with gluten. So, often taking the food out isn’t enough and we need to do some gut healing with things like l-glutamine, which I mention in my amino acid talk and also restoring the probiotic balance and doing some things that are just helping repair the gut, getting digestion back on track, getting your digestive motility moving through things like digestive enzymes and bitter herbs and things that like. And so, I’m just going to mention three probiotics that have been shown—they’re called “psychobiotics”. They’re nicknamed that because of the beneficial effects on mental health and in another lecture I was also talking about how the probiotics in our gut are also responsible for producing serotonin that our body has available to it, which we know is the “happy hormone”, that’s what the selective serotonin re-uptake inhibitors work on. So, getting the right balance of bugs in your gut could be just as effective, potentially, as taking an antidepressant medication. So, that’s really cool. But the three bugs that a lot of research has been done on are the Lactobacillus casei, Bifidobacteria longum and Lactobacillus helveticus, which has been shown in studies to actually decrease anxiety and to lower levels of cortisol, which we know is also implicated in depression and anxiety and probably other more serious psychiatric disorders.
So, I hope that was enlightening. We talked about how gluten can contribute to inflammation, leaky gut and thereby exacerbate or create mental health issues. How going gluten-free is not the same as going “whole foods” and how going gluten-free might be the answer or at least a part of your self-care process in healing from mental health conditions.
Thanks a lot, guys. I hope you’re having a good New Year, a good 2017, and I’ll see you soon.
My website is taliand.com and you can contact me at connect@taliand.com. I’m a naturopathic doctor and I focus on mental health and I work in Toronto, Ontario, at Bloorwest Wellness Clinic.
The gut-brain connection has gotten the attention of researchers and functional medical practitioners. I discuss, briefly, what research has shown us in regards to the complex realm of the microbiome and how depression may be a result of inflammation in the brain, stemming from inflammation in the gut.
My name is Dr. Talia Marcheggiani and I am a naturopathic doctor and mental health expert in Toronto.
Today we’re going to talk about the gut-brain connection and how that can influence your mental health symptoms.
I think we intuitively know that the gut and brain are connected. When you feel mental symptoms of anxiety we immediately notice the effects on our gut.
During times of stress, we know that we have indigestion, we’re more predisposed to things like diarrhea and irritable bowel syndrome.
Even anatomically there’s a nerve, called the Vagus nerve, that directly connects the brain to our digestive system.
This nerve is responsible for putting into that “rest and digest” state.
When this nerve is stimulated, our bodies start to secrete digestive enzymes, saliva starts to be secreted and we’re able to break down our food and absorb the nutrients from the food that we’re eating.
A lot of research has been going on, that you might be aware of, about healthy gut bacteria. And more and more people, especially medical doctors, happily, are prescribing probiotics anytime someone is prescribed antibiotics for a bacterial infection.
Scientists have started to study more about these gut bacteria. We know we have, like, 5 lbs of gut bacteria, sitting in our digestive systems. Over 100 trillion cells, this is more than 10x the amount of cells we have in our physical bodies, and more DNA than we have in our body.
We’re more bacteria than we are human!
And these gut bacteria, we can’t survive without without them, they influence the very physiology we experience and they definitely impact our health.
These bacteria are responsible for helping us digest our food, and for our mental and emotional wellness as well as keeping our immune system in check.
So, a disbalance in bacteria, or an increase in that negative, bad bacteria and not good strains of healthy bacteria, can lead to diseases like autoimmune disease or multiple sclerosis, or things like chronic fatigue syndrome as we’re seeing in research.
Scientists are starting to study more about how the bacterial balance in our gut can influence our mood and mental health.
These gut bacteria can actually produce serotonin. So that’s the happy hormone in the brain. And you may have heard of serotonin, especially if you suffer from depression or anxiety because your doctor might have recommended a kind of medication called SSRIs, or Selective Serotonin Reuptake Inhibitors, or a similar drug, SNRIs, like Venlafaxine, which is a Selective Serotonin and Norepinephrine Reuptake inhibitors.
This is based on on the Monoamine Hypothesis that there is this chemical imbalance in the brain. That your body is either not making enough, or absorbing enough or reacting to serotonin enough.
When we’re given these antidepressants, the idea is that we’re recorrecting this brain imbalance and that’s as much of the story as we’ve got. We don’t know why these brain imbalances are around.
So I think that, if we’re going to stick with this hypothesis, which is still controversial in science, we should look to the gut bacteria because we know that gut bacteria produces a significant amount of serotonin and, if we’re blaming depression and anxiety on serotonin deficiencies, why not look at the gut and find out how we can influence the balance of healthy gut bacteria so that we’re producing enough serotonin. Especially if we’re relying on drugs to correct the imbalance and we don’t have enough serotonin for the drugs to work properly.
Gut cells on their own produce 95% of the serotonin in the body so basically every single chemical that we have in our brain is produced or exists in the gut.
So, we need to be able to feed the gut cells so that they’re producing healthy amount of hormone we need to experience a healthy mood and live our lives in ways that are stress-free and energized and happy so that we can effective in our lives.
Mentally and emotionally, you might know this “gut feeling” that we talk about in language and that’s kind of permeated throughout cultures. So, we know that when we have this feeling in the gut that, it’s almost like an intuition. Some people will say, “I just knew it, because I felt it in my gut.” And I think that we’ve always had this intuition. We’ve always had this connection between what our mental state, our thoughts, beliefs and emotions are telling us and what our gut is telling us.
We think that we think with our brains and that all of the mental symptoms we experience are happening at the level of the brain, but because of this tight gut-brain connection, we know that’s not true.
People that have done brain studies actually find that we have thoughts before we have brain activity a lot of the time so, I wonder if we’re actually thinking with our gut, which is a revolutionary and radical thought, but we’re finding more and more evidence for this in science.
You may have heard of the condition called “Leaky Gut” or the more official, scientific term is “Intestinal Permeability”. Our gut is really selective about what it absorbs for good reason. What happens, though, when we’re experiencing chronic stress, or we use a lot of antibiotics or maybe eat things like high-sugar foods, caffeine, or a lot of alcohol, we can cause gut inflammation, which starts to allow bacteria, food toxins, or whole proteins from food into the blood, into the body by breaking down the integrity of the gut.
So, when it comes to health, for most health conditions, especially when there’s a few symptoms that seem disconnected and it’s hard to find the relationship between them, naturopathic medicine and, now, functional medicine and, hopefully soon, conventional medicine, begins to look at gut health.
So if I’m sitting across from a patient who has a long list of health symptoms that seems like they’re not connected and has digestive symptoms—and 40-60% of the population, in general has some kind of digestive symptom, whether it be bloating after eating, feeling fatigued after eating, just feeling like your food is sitting in your stomach and not really moving through, GERD, so acid reflux, heartburn, diarrhea and constipation, or those IBS symptoms, gas and bloating—when I sit across from a patient with any of those symptoms, the first place we go, in terms of treatment, is to look at the gut.
So how do you keep your gut healthy? There’s a few things. The first is to eliminate anything that’s causing gut inflammation, so this could be excessive caffeine and alcohol, excessive refined sugars, antibiotics without doing a probiotic immediately after or during an antibiotic treatment, chronic mental and emotional stress, or physical stress, and food sensitivities: something we’re eating that’s causing our immune system to react and our gut to become inflamed.
Ensuring a proper bacterial balance by either supplementing with a probiotic or eating a variety of fermented foods such as kefir, yogurt, kombucha or saurkraut, and making sure that we’re eating a variety of whole foods: whole grains, fruits and vegetables, and healthy fibres that are going to feed that healthy gut bacteria.
So, when it comes to mental health, such as depression and anxiety, chronic mental stress, even things like bipolar, OCD, conventional medicine tends to just look at the brain and blame the brain on the host of symptoms that patients might experience.
Naturopathic medicine looks at the entire body. And since we know that the gut and brain are connected, and our patients are simultaneously experiencing mental health symptoms and digestive symptoms, we definitely have to treat the gut.
For more information, you can visit my website at taliand.com, or send me an email at connect@taliand.com.
I work at Bloor West Wellness Clinic in Bloor West Village, in Toronto.
One of my favourite anti-health commercials on TV are the heartburn ones. My brother and I share a laugh while a woman is slapped by spicy spaghetti to prevent her from eating it and experiencing heartburn. The tagline asks, “Are your favourite foods fighting you? Fight back!” Why is this commercial so ridiculous? It’s the irony; if eating spicy, garbage food gives you heartburn then maybe, instead of “fighting back”… STOP EATING IT! Sometimes we take common sense for granted and, of course, using simple common sense would put Tums out of business.
Nothing quite says summer like the smell of a barbecue, a cool lakeside breeze, the stiff comfort of a wooden Muskoka chair, the company of a good book and, of course, a nice, cool bottle of bubbly beer.
In North American society, we are conditioned to believe that we should consume 1200-1500mg of calcium a day in order to prevent osteoporosis in our later years. Parents feel they are unfit if they do not forcefeed their children 3 servings of dairy products (almost a litre of milk) a day!
It seems that almost everyone is “gluten-free” these days. I often hear the following Frequently Asked Questions surrounding the gluten and dairy-free phenomenon: Is this a trend? If these people have gluten allergies, why don’t they need to carry an epi-pen? Is this just a weight loss fad? For answers, read on for a naturopathic medical student’s explanation about food sensitivities.
Our immune systems are powerful things, they prevent us from the deadly pathogens we encounter daily (even those that happily reside in our own bodies). When we get sick, it is often not the bug that causes our symptoms, but our own body that creates inflammation and feelings of lethargy and malaise as it fights the pathogen. As necessary as our immune systems are, they also have the potential to attack the cells of our own bodies, which we see in a class of diseases termed autoimmune diseases. Our gastrointestinal tract also has a powerful immune system of its own because it is important for our body to ensure the harmful pathogens that we accidentally ingest don’t enter the rest of our body. This immune system, however, has the potential to react to non-harmful substances, like food proteins, and cause detrimental effects to our body. This is known as a food allergy.
There are many types of immune reactions but one of the most common is the IgE (a type of antibody) hypersensitivity reaction. This is the reaction experienced by people with hayfever and anaphylaxis (from peanut allergies, for example). In these reactions, the body reacts to the otherwise non-harmful substance, such as a peanut, in a severe manner – potentially causing the throat to swell to the point where it closes, causing suffocation. This is why people with peanut allergies must take extreme caution to avoid the source of their food allergy.
When someone claims to be allergic or “sensitive” to gluten or dairy, however, they are likely referring to an IgG mediated immune reaction, which causes different effects, to varying degrees. Rather than the very acute, life-threatening effects of some IgE anaphylactic immune reactions, IgG-mediated reactions often manifest as inflammation and chronic disease. In these types of food allergies, there is often the presence of “leaky gut” or intestinal permeability. A normal intestine has rows of cells into which food molecules enter. These cells are normally tightly linked by molecules called “tight junctions”, which prevent food molecules (proteins, fats and sugars) from entering the spaces between the cells. This means that food molecules must go through the cells in order to get into the rest of the body. When food enters our gut it is broken down by enzymes into its most minute particles and absorbed into intestinal cells. In a normal, healthy body, we do not want complex particles of food to get into our blood stream. When large proteins are found in our blood, our body sees them as being foreign and potentially harmful, and our immune system attacks them.
In a person with leaky gut, however, the junctions between the intestinal cells are broken and spaces are created between the cells. When food is taken in, whole proteins from the food (gluten is the protein found in wheat and casein is the protein in dairy products) slip through the spaces between the intestinal cells and enter the blood stream in large pieces. The immune system then attacks these proteins, causing a series of unpleasant events, mostly involving inflammation and feelings of malaise. Many scientists claim that chronic inflammation is the cause of all major disease. Scientists are unsure what causes leaky gut, but some theories include general inflammation from stress, excessive alcohol consumption or a lack of friendly gut bacteria that keep the “bad” bacteria from taking over and wrecking havoc. However, there is an increasing body of evidence showing that leaky gut may be caused by a hyper-reaction of the gut’s immune system to certain foods. These proteins then enter through the spaces between the cells into the bloodstream and to the rest of the body, causing a widespread array of unpleasant symptoms.
Most naturopaths profess that autoimmune-type diseases, inflammatory diseases, gastrointestinal complaints and some cases of psychiatric disorders coexist with some form of food intolerance and that, when the food that the patient is sensitive to is removed, the disease symptoms go away. Examples of diseases that may be a result of food sensitivities include:
migraines
acne or other skin conditions
Lupus
Arthritis and gout
Irritable Bowel Syndrome or Inflammatory Bowel Disease
GI complaints such as bloating, gas or constipation
Ulcerative colitis and Crohn’s
Celiac disease (specifically defined as an allergy to gluten, the protein in wheat, rye and barley)
Psychiatric disorders, such as depression, schizophrenia or anxiety
Asthma
Childhood ADHD
Autism
Any disease in which there is pain or inflammation
And the list goes on.
Naturopathic testing for food intolerances involve the Elimination Diet, which is a strict removal of all foods that are common causes of sensitivities. My clinical nutrition professor claims that in the majority of cases, gluten and casein (from dairy products) are the culprit. The foods are removed for 30 days and most patients experience a complete reversal of their pain and symptoms. Our professor told us an amazing story about a patient with autism who, at the age of 9 years old, began to talk for the first time after eliminating an allergy-causing food and then proceeded to live a normal life.
At the end of the removal phase, the patient is then asked to reintroduce the foods, in a controlled and systematic fashion, under the guidance of their naturopathic doctor. If symptoms return upon reintroducing a certain food, then that food is deemed the culprit and, if they want to remain free of disease, they are advised to avoid that food for life. Being gluten or dairy-free may be a difficult lifestyle change for some individuals, but, for most, it is a small inconvenience compared to the incredible results they experience. Also, due to the growing understanding about the prevalence of food sensitivities, many gluten-free options and dairy alternatives are available at most restaurants and grocery stores.
Medical doctor Alan R. Gaby, wrote an excellent paper examining studies of patients with migraine headaches, irritable bowel syndrome (IBS), asthma, arthritis and ADHD. When put on the Elimination Diet, 92% of the migraine sufferers and 91% of the people with arthritis experienced complete reduction of symptoms. No drug in the world has shown to produce results like that!
The Elimination Diet is a powerful naturopathic tool and has shown to improve and cure many patients’ symptoms. It’s a great example of “identifying and removing the cause of disease”, which is one of the 6 principles of naturopathic medicine. If you are interested in seeing how this diet may help you identify a food allergy and experience freedom from your symptoms, please contact a naturopathic doctor in your area.
For breakfast, I would typically eat a high-fat smoothie containing coconut milk yogurt, gelatin, and avocado, and topped with pumpkin seeds and cacao. Sometimes I’d make fat bombs or homemade unsweetened chocolate.
