
Will Bulsiewicz
Board-certified gastroenterologist and New York Times bestselling author focused on gut health and the microbiome; host of The Gut Insiders who provides evidence-based nutrition and clinical insights throughout the episode.
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Jan 13, 2026 • 52min
The Gut–Hormone Connection: Fiber, Microbiome & Fertility | Will Bulsiewicz, MD
Will Bulsiewicz, MD, a gastroenterologist and bestselling author specializing in the gut microbiome, explains how gut health and inflammation influence hormones and fertility. He talks about fiber’s role, microbial short-chain fatty acids, fermented foods, and the estrobolome. Practical tips include plant variety, meal timing, and daily rhythms to support gut-driven hormonal balance.


