The No.1 Poo & Gut Scientist: If Your Poo Looks Like This Go To A Doctor! Dr Will Bulsiewicz

TL;DR

The video features gastroenterologist Dr. Will Bulsiewicz explaining that the gut microbiome (38 trillion microbes in the colon) controls digestion, immune system, metabolism, mood, hormones, and brain health.

Key insights

• 60 % of stool weight is microbial in origin; stool shape and consistency reflect gut health and microbiome composition.
• The gut barrier (single layer of cells with tight junctions) breaks down in chronic inflammation; microbes produce short-chain fatty acids (e.g., butyrate) that repair the barrier and reduce inflammat
• Dietary choices change the microbiome within 24 hours; the gut is forgiving but can only be pushed so far.