57:01David Zeevi on Personalized Nutrition Based on Your Gut Microbiome
From Y Combinator · Published Jul 22, 2019 · Watch on YouTube
TL;DR
The video demonstrates that postmeal blood glucose responses vary widely between individuals eating identical meals, driven by factors including gut microbiome composition, lifestyle, and genetics. A machine-learning algorithm integrating 137 features (microbiome, blood parameters, meal nutrients, etc.) predicted glycemic responses with R=0.68, approaching the within-person reproducibility bound.
Key insights
- Four out of ten US adults are obese (BMI >30), up from one in ten in the 1980s; one in ten Americans is diabetic, costing $250 billion annually.
- Major dietary changes over 50 years: fat reduced from ~20% to ~15% of calories; sugar replaced fat; more additives; shift in meal times due to electric light and shift work.
- Sugar consumption in 1700 (annual) equals daily consumption today – humans have not evolved to handle this amount.
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