Unwrap the truth about your food 👉 ⁠Get the ZOE app https://joinzoe.onelink.me/XebC/9r7grdmf In this groundbreaking episode, Jonathan, Tim, and guest researcher Professor Quirijn de Mast explore a landmark clinical trial conducted in partnership with Tanzanian scientists and community members at the Kilimanjaro Christian Medical Centre (KCMC). Published in Nature Medicine, the study investigates what happens when people switch between Western-style eating and a traditional diet from the Kilimanjaro region of Northern Tanzania — rich in fermented foods, legumes, ancient grains, and green vegetables. The results? Rapid, measurable changes to immune function, inflammation, and gut health — with powerful implications for global disease risk. We dive into the science behind millet porridge, fermented banana beer, and the fibre-rich meals that Tanzanian communities have eaten for generations. This episode explores scientific research on traditional East African diets and inflammation, led by Quirijn in close collaboration with Tanzanian scientists and participants. As a Western podcast, we are aware of the need for humility when discussing cultural traditions not our own, and approach this conversation with respect and curiosity. 🌱 Try our new plant based wholefood supplement - Daily30: https://zoe.com/daily30?utm_medium=zoe_podcast&utm_source=podcast_platform&utm_campaign=d30 Follow ZOE on Instagram | https://www.instagram.com/zoe/ Timecodes 00:00 Can This African Diet Transform Your Health in 2 Weeks? 02:47 What Makes African Diets Healthier Than Mediterranean? 05:17 The Mediterranean Diet: Are We Getting It Wrong? 07:57 Africa’s Forgotten Superfood: Ancient Grain Porridge 10:37 Are These Ancient Grains the Original Superfoods? 13:17 Diet Changes That Predict Disease — Here’s How 15:58 What Pre-Western Diets Reveal About Human Health 18:31 We Built a Pop-Up Restaurant on Mount Kilimanjaro 21:00 This Fermented Banana Beer Might Boost Immunity 23:23 Inflammation Skyrockets After Just 2 Weeks on This Diet 26:07 Can a Fermented Drink Reverse Western Diet Damage? 28:47 How Food Labels Trick You Into Thinking You're Healthy 31:38 Is Your Immune System Running on the Wrong Fuel? 34:12 These Roots Are Healthier Than Potatoes — Here’s Why 36:51 Your Porridge Is Making You Unhealthy (Without You Knowing) 39:35 What People Actually Eat on a Traditional African Diet 42:21 Pasteurised Fermented Foods — The Shocking Downside 45:06 Most People Don’t Eat Enough Fiber. Do You? 47:49 Why One Diet Doesn’t Work for Everyone 50:33 The #1 Diet Swap to Transform Your Health 📚Books by our ZOE Scientists The Food For Life Cookbook | https://amzn.to/4amfIMX Every Body Should Know This by Dr Federica Amati | https://amzn.to/4blJsLg Food For Life by Prof. Tim Spector | https://amzn.to/4amZinu Ferment by Prof. Tim Spector | https://amzn.to/4hU1Df5 Free resources from ZOE: Live Healthier: Top 10 Tips From ZOE Science & Nutrition | https://zoe.com/freeguide?utm_medium=podcast&utm_source=podcast&utm_campaign=freeguide Gut Guide - For a Healthier Microbiome in Weeks | https://zoe.com/gutguide?utm_medium=podcast&utm_source=podcast&utm_campaign=gutguide Better Breakfast Guide | https://zoe.com/breakfastguide?utm_medium=podcast&utm_source=podcast&utm_campaign=breakfastguide Mentioned in today's episode Immune and metabolic effects of African heritage diets versus Western diets in men: a randomized controlled trial, Nature Medicine (2025) https://www.nature.com/articles/s41591-025-03602-0 Global Impacts of Western Diet and Its Effects on Metabolism and Health: A Narrative Review, Nutrients (2023) https://pmc.ncbi.nlm.nih.gov/articles/PMC10302286/#sec15-nutrients-15-02749 Have feedback or a topic you'd like us to cover? Let us know here: https://gf6hx47iu5g.typeform.com/topicsuggestion Episode transcripts are available here: https://zoe.com/learn/category/podcasts