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July 24, 2025 95 mins

Your gut microbiome affects everything from your mental health and cognitive function to your immune system and metabolic health. Gut health symptoms, such as bloating, gas, constipation, or diarrhea, could be a sign that you have low species diversity. Dr. Will Bulsiewicz and Mike Haney discuss how the gut and brain communicate, how the gut microbiome affects the gut barrier and therefore your immune system, what to eat to improve the gut microbiome, and what microbiome testing can tell you.


Sign Up to Get Your Free Ultimate Guide to Glucose: https://levels.link/wnl


🎙 What Will Bulsiewicz, MD, & Mike Haney discuss:

9:14 — Gut health takes time to improve

14:49 — Your gut microbiome informs your gut and overall health

18:42 — Lifestyle choices help shape an individual’s gut microbiome

24:20 — A compromised gut barrier affects the immune system

30:51 — Nutritional strategies can improve the gut microbiome and reduce disease flares 

32:46 — The gut and the brain communicate

52:27 — A diverse gut microbiome is a sign of good health

56:45 — Your gut microbiome informs your bowel movements

1:01:46 — When to see a doctor for gastrointestinal symptoms

1:05:32 — Increasing fiber helps the gut microbiome

1:11:41 — The beneficial byproducts of gut microbes are postbiotics

1:14:59 — Eat a wide variety of plant foods to get optimal fiber


Levels helps you see how food affects your health, empowering you with the tools needed to achieve health goals and improve healthspan. Levels Members gain access to the Levels app and continuous glucose monitors (CGMs), providing real-time feedback on how diet and lifestyle choices impact your metabolic health.


Look for new shows every month on A Whole New Level, where we have in-depth conversations with thought leaders about metabolic health.


🔗 Helpful links:
Watch the conversation: https://youtu.be/iAHOycufGn8

Find us on YouTube: https://youtube.com/levelshealth?sub_confirmation=1

Will Bulsieweicz, MD, https://theplantfedgut.com/about/

Fiber Fueled: https://www.amazon.com/Fiber-Fueled-Plant-Based-Optimizing-Microbiome/dp/059308456X

The Plant Fed Gut: https://theplantfedgut.com/

Connect with Dr. Will Bulsiewicz on Instagram: https://www.instagram.com/theguthealthmd/?hl=en

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