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#070 Dr. Eran Elinav on Microbiome Insights into Personalized Response to Diet, Obesity, and Leaky Gut

Feb 8, 2022 1h 56m 14 insights
<p>Eran Elinav, MD, PhD, is a professor of immunology and principal investigator at the Weizmann Institute of Science in Tel Aviv, Israel, where he co-directs the Personalized Nutrition Project. Dr. Elinav is also a principal investigator at the German Cancer Research Center in Heidelberg, Germany. His research focuses on understanding the complex interactions between humans and the bacteria that reside in their gut and how these interactions shape human health and disease.</p> <p><strong>In this episode, Dr. Elinav and I discuss...</strong></p> <ul> <li><strong>(00:00)</strong> Introduction to Dr. Eran Elinav</li> <li><strong>(06:38)</strong> Circadian rhythm of the microbiome</li> <li><strong>(17:17)</strong> Lessons from Hunter-gatherers</li> <li><strong>(24:44)</strong> Nurturing the microbiome in children</li> <li><strong>(35:16)</strong> Triglycerides and cholesterol</li> <li><strong>(38:58)</strong> Saturated fat</li> <li><strong>(40:25)</strong> Effect of artificial sweeteners on the microbiome</li> <li><strong>(56:10)</strong> What causes recurrent obesity</li> <li><strong>(58:17)</strong> Impact of caloric restriction</li> <li><strong>(59:26)</strong> Intestinal permeability (gut leakiness)</li> <li><strong>(01:19:54)</strong> Bacteriophage therapy and precision probiotics</li> <li><strong>(01:34:44)</strong> Bacterial role in TMAO risk</li> <li><strong>(01:40:33)</strong> Weight gain from smoking cessation</li> <li><strong>(01:41:53)</strong> Tips for diet personalization</li> </ul> <div><a href="https://www.foundmyfitness.com/episodes/eran-elinav">Get the show notes</a></div> <p><strong>Looking for more? <br /></strong>Join over 300,000 people and get the latest distilled information on sleep, depression, and fasting straight to your inbox weekly: <a href="https://www.foundmyfitness.com/newsletter">https://www.foundmyfitness.com/newsletter</a></p> <p>Try thirty days of our FoundMyFitness premium member to get access to exclusive episodes, emails, a live Q+A with Rhonda and more: <a href="https://www.foundmyfitness.com/trial">https://www.foundmyfitness.com/trial</a></p>
Actionable Insights

1. Nurture Early Life Microbiome

Expose young children, especially in the first three years of life, to diverse environmental microbes (e.g., dirt) to help shape a robust and diverse microbiome. This can train their immune system and impact healthy metabolism, potentially reducing the risk of asthma, autoimmune diseases, and later-life obesity.

2. Avoid Overly Sterile Childhood

Do not overly protect young children from microbial exposure, as overly sterile conditions may harm their microbiome’s development. This can predispose them to an underdeveloped microbiome and associated health issues.

3. Cautious Early Antibiotic Use

While life-saving, be mindful that early life exposure to antibiotics can disrupt the developing microbiome. This potentially increases the risk for diseases like asthma and later-life obesity.

4. Maintain Healthy Sleep Patterns

Prioritize and maintain healthy sleep patterns, avoiding erratic sleep-wake behavior. This profoundly impacts the microbiome’s function, influencing weight regulation, glucose metabolism, and the avoidance of type 2 diabetes.

5. Implement Time-Restricted Feeding

Consider time-restricted eating to limit food intake to a specific window. This can restore the gut microbiome’s circadian activity and positively impact metabolic and immune function.

6. Avoid Smoking for Microbiome

Refrain from smoking, as cigarette-related chemicals penetrate the gut and disturb the microbiome’s composition and function. This independently increases the risk of developing obesity, even after smoking cessation.

7. Consume Dietary Fibers

Incorporate dietary fibers into your diet, as they are generally beneficial for the gut microbiome and overall human health. The specific types of fibers and their effects can vary.

8. Probiotics with Antibiotics Caution

Exercise caution when taking probiotics concurrently with antibiotics, as probiotics may persistently inhibit the return of the indigenous microbiome after antibiotic treatment. This could lead to chronic disturbances and increased risk for chronic diseases.

9. Utilize Personalized Nutrition

Explore personalized nutrition services or self-monitoring methods to understand individual glycemic responses to foods. This allows for tailored dietary adjustments based on unique microbiome and physiological data.

10. Monitor Blood Sugar Responses

Use a personal glucose monitor (e.g., continuous glucose monitor or finger-prick device) to measure your blood sugar responses after consuming different foods. This enables you to identify counterintuitive reactions and tweak your diet to reduce sugar spikes.

11. Supplement Isoflavonoids for Weight

If experiencing recurrent weight regain (yo-yo obesity), consider supplementing with specific isoflavonoid metabolites (e.g., apigenin, naringenin). This may potentially restore fat cell signaling to release heat and store less fat, as observed in mouse studies.

12. FMT for Yo-Yo Obesity

In cases of yo-yo obesity, fecal microbiome transplantation (FMT) may offer a way to reset the microbiome and prevent exaggerated weight regain. This approach, demonstrated in mice, replaces a ‘bad memory’ microbiome with one capable of generating beneficial compounds.

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