Colorectal surgeon Dr. Anna Toker reveals how gut health directly impacts fertility through the gut-fertility axis and estrobolome. She explains why 80% of people are gluten sensitive and shares the #1 thing you can do immediately to improve your gut health.
Board certified colorectal surgeon with 30+ years experience and microbiology background
Key Insights
Actionable Advice
Dr. Anna Toker shares her unconventional path through surgical residency while secretly pregnant, and how she strategically chose colorectal surgery to have regular hours for family time. Her story demonstrates that women don't have to choose between career success and motherhood if they make conscious decisions about their priorities.
After 30 years of looking at people's guts, Dr. Toker reveals the shocking connection between microbiome health and fertility. She explains how the estrobolome - gut bacteria that process estrogen - becomes dysfunctional under stress, creating the same inflammation that causes both anxiety and fertility problems.
Dr. Toker explains that 80% of people are gluten sensitive, and how modern wheat processing creates maximum inflammatory potential. She details the zonulin pathway that creates leaky gut and shares why complete elimination for 3-6 months is non-negotiable for healing.
Rather than expensive practitioner testing, Dr. Toker recommends accessible microbiome testing through Viome with personalized dietary recommendations. She explains how to interpret results and make sustainable changes that support both gut health and fertility outcomes.
“The microbiome is responsible for a couple of different things from a hormonal standpoint for women in particular. It's called the estrobolome. It's the group of bacteria in the GI tract that helps your body process estrogen.”
— Dr. Anna Toker▶ 49:47
Your gut microbiome controls hormone processing through the estrobolome - bacteria that help balance estrogen and progesterone. A dysfunctional microbiome leads to estrogen dominance, which disrupts fertility.
“The first step anyone should do, no matter what their problem is, whether it's you can't sleep, you can't focus, your clients are looking to start their own families... the first step is gluten free.”
— Dr. Anna Toker▶ 13:42
Yes, 80% of people are gluten sensitive. Gluten causes inflammation through zonulin which creates leaky gut. You must go completely gluten-free for 3-6 months minimum - no cheating allowed for it to work.
“It can take a year, two years, honestly, before you'll notice traction. So Americans also like to have instant. So it's I if you change your ways and you're thinking three months into it, six months into it, I still have some of these problems, just stick with it, I promise, because it takes a while to recycle.”
— Dr. Anna Toker▶ 64:18
It takes 3-6 months minimum for gut inflammation to resolve after going gluten-free. Some people need up to 2 years to see full results because the microbiome is slow-moving and complex.
“The same thing that is causing their anxiety is also affecting their fertility. You gotta start with the gut. All disease starts in the GI tract.”
— Dr. Anna Toker▶ 63:36
The gut-fertility axis is the connection between your microbiome and reproductive hormones. Stress damages the microbiome, which then can't properly process estrogen through the estrobolome, leading to hormone imbalances that affect fertility.
“Under stress in particular. When you are under stress, that directly negatively impacts the microbiome and the most sensitive aspect of it is going to be this estrogen metabolism aspect of the microbiome.”
— Dr. Anna Toker▶ 50:36
Yes, stress directly damages the microbiome, particularly the estrobolome that processes reproductive hormones. This creates a cycle where stress affects gut health, which then disrupts hormone processing and fertility.
“American flour, it's green gluten, it's spray dried, and instantly milled, which means it's got the maximum amount of lectins and inflammatory gluten.”
— Dr. Anna Toker▶ 39:27
Modern wheat is grown with high fertilizer which increases gluten content, then spray-dried with chemicals instead of sun-dried. European wheat is less inflammatory because it's sun-dried, which breaks down much of the gluten naturally.
“There's a company that I use. It's called Viom, v I o m... If you use my name when you check out, it they'll actually give you a hundred and ten dollar discount.”
— Dr. Anna Toker▶ 65:25
Dr. Toker recommends Viome microbiome testing for $200 (use code 'drtoker' for $110 discount). It provides specific dietary recommendations of what to eat, avoid, and what's neutral based on your unique microbiome.
Dr. Anna Toker's step-by-step protocol for optimizing gut health to support fertility
Go completely gluten-free
Eliminate all gluten for minimum 3-6 months with no cheating. This allows zonulin inflammation to resolve and gut lining to heal.
Test your microbiome
Take Viome microbiome test ($200, use code 'drtoker' for $110 discount) to get personalized dietary recommendations.
Follow seasonal eating
Eat foods that are in season to force dietary variety and feed different bacterial populations in your microbiome.
Switch dairy sources
Avoid cow dairy but sheep and goat dairy are acceptable due to similar composition to human breast milk.
Make fermented foods
Create your own fermented foods like yogurt and sourdough rather than relying on processed versions with added vinegar.
Be patient with healing
Allow 3 months minimum for initial inflammation reduction, up to 2 years for complete microbiome rebalancing.
Your microbiome controls hormone processing through the estrobolome - bacteria that help your body balance estrogen and progesterone
Dr. Anna Toker, colorectal surgeon with 30+ years experience, explains that dysfunctional microbiome leads to estrogen dominance, which is what polycystic ovarian disease is - too much estrogen converts to testosterone disrupting fertility
80% of people are gluten sensitive, and gluten causes inflammation through zonulin which creates leaky gut
Dr. Toker observed in her practice that patients with IBS and belly discomfort had associations with bread intake, leading her to discover published literature showing 80% gluten sensitivity rates
Stress directly impacts the microbiome, and the most sensitive aspect affected is estrogen metabolism
Dr. Toker explains that the same thing causing anxiety in fertility patients is also affecting their fertility - the gut-fertility axis means stressed microbiome can't properly process hormones
Going completely gluten-free for 3-6 months is required - you can't intermittently cheat and have it work
Dr. Toker compares it to addiction recovery - you can't be sober if you drink a beer from time to time. The microbiome needs 3-6 months to heal from inflammation, similar to surgical wound healing timelines
Modern wheat is more inflammatory due to high fertilizer use and chemical drying versus traditional sun-drying
Dr. Toker explains that fertilizer increases gluten content in wheat kernels, and chemical spray-drying preserves maximum inflammatory compounds, while European sun-dried wheat breaks down much of the gluten naturally
Your microbiome becomes your child's microbiome - it's the first thing you can do for your child's health
Dr. Toker explains that the maternal microbiome is passed to the baby, not the father's contribution, making gut health critical for both 40 weeks of healthy pregnancy and the child's future health
Food cravings come from your microbiome, not mental weakness - bacteria send signals for dopamine in exchange for processed foods
Dr. Toker explains that when you crave a donut, your microbiome is sending signals to your brain promising dopamine release in exchange for the high sugar, fat, and seed oil content that feeds certain bacterial populations
You can cure anxiety, depression, schizophrenia, and autism by correcting the microbiome through fecal transplantation
Dr. Toker states that in Europe they are doing fecal transplantation for these conditions, and you can cure schizophrenia with fecal transplant, but in America they prefer selling SSRIs instead
Cow dairy is inflammatory, but sheep and goat dairy is fine because their milk composition is nearly identical to human breast milk
Dr. Toker explains that when people say 'no dairy,' they mean cow dairy specifically - sheep and goat milk are easy to digest, so feta and sheep's milk ricotta are acceptable alternatives
Making a conscious decision about how you want to live allows you to have both career and family
Dr. Toker chose colorectal surgery specifically because it allowed regular hours to be home with her children, showing that women don't have to choose between career and family if they make strategic decisions
Your microbiome controls hormone processing through the estrobolome - bacteria that help your body balance estrogen and progesterone
▶ 49:4780% of people are gluten sensitive, and gluten causes inflammation through zonulin which creates leaky gut
▶ 13:12Stress directly impacts the microbiome, and the most sensitive aspect affected is estrogen metabolism
▶ 50:36Going completely gluten-free for 3-6 months is required - you can't intermittently cheat and have it work
▶ 32:01Modern wheat is more inflammatory due to high fertilizer use and chemical drying versus traditional sun-drying
▶ 38:47Your microbiome becomes your child's microbiome - it's the first thing you can do for your child's health
▶ 67:13Food cravings come from your microbiome, not mental weakness - bacteria send signals for dopamine in exchange for processed foods
▶ 34:57You can cure anxiety, depression, schizophrenia, and autism by correcting the microbiome through fecal transplantation
▶ 36:09Cow dairy is inflammatory, but sheep and goat dairy is fine because their milk composition is nearly identical to human breast milk
▶ 59:29Making a conscious decision about how you want to live allows you to have both career and family
▶ 14:13“You have to choose between having a successful career and being a good mother”
CONSIDER: You can make conscious decisions that allow you to have both career and family without living by masculine standards of achievement
“Food cravings mean you're mentally weak or lack willpower”
CONSIDER: Food cravings come from your microbiome bacteria sending signals to your brain for dopamine in exchange for processed foods
“The first step anyone should do, no matter what their problem is, whether it's you can't sleep, you can't focus, your clients are looking to start their own families... the first step is gluten free.”
“You can't be sober if you drink a beer from time to time. You can't intermittently cheat and have it work.”
“When you're craving the donut, you are not actually craving the donut. You are not mentally weak because you crave the doughnut. This is your microbiome wanting the doughnut.”
“The same thing that is causing their anxiety is also affecting their fertility.”
“Your microbiome will become your child's microbiome. It is critical that it's healthy.”
“You can cure schizophrenia with a fecal transplant.”
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Frameworks & Methods
Key Shifts
Ninety percent of medical school curriculum focuses on pharmacology, while 80% of medical schools don't require a single nutrition class for doctors to graduate
Calley Means, former pharma lobbyist, reveals that Stanford Medical School and Harvard Medical School are among the institutions that don't require nutrition education, despite food being the primary driver of metabolic dysfunction affecting fertility.
PCOS and fertility issues are fundamentally connected to insulin resistance and metabolic dysfunction, which can be reversed through dietary interventions
Calley's sister Casey, a Stanford-trained surgeon, discovered that patients with fertility issues, depression, diabetes, and high cholesterol all shared root metabolic dysfunction that could be addressed through food and exercise interventions rather than separate medications for each condition.
The fertility journey can be a catalyst for complete life transformation if you allow it to wake you up to an entirely different way of living
Lavinia spent 10 years on her fertility journey from age 33-43, transforming from someone living in victim mentality to an empowered woman who now coaches other women through fertility struggles.
You can meditate all day, but if you don't change the underlying belief system that's causing you to be stuck in worst-case scenario thinking, meditation alone won't create the transformation you need
Lavinia tried meditation and felt better physically but still had racing thoughts about 'what if I transfer and it doesn't work' until she addressed her limiting beliefs through mindset work.
