How to shrink the dangerous fat linked to heart disease and cancer in 12 weeks | Prof Jimmy Bell

There's a hidden fat that matters more for your health than your weight. This is visceral fat: it wraps around your organs, raises your risk of heart disease and cancer, and builds up even in people who look slim and healthy. In today’s episode, Professor Jimmy Bell, a world-leading expert in measuring visceral fat, explains how we can shrink this dangerous belly fat in just 12 weeks. Jimmy explores why two people can weigh exactly the same and carry completely different amounts of this hidden fat, what it is, where it hides and why it matters. By the end, you'll have a completely new understanding of body fat, and what it really means for your long-term health. If your weight has stayed exactly the same for years, what do you think is happening underneath it? 🌱 Try our science-backed and tasty wholefood supplement Daily30 🌿Let your gut microbes snack on the ZOE Gut Health Bar Build healthy habits. Download the ZOE app today and start your trial for just £2.30 for your first week. 👉 Join ZOE Follow ZOE on Instagram. Timecodes 00:00 Intro 02:47 The DEXA scan result that didn't match how thin he looked 09:46 Why your body composition can get worse even while your weight stays the same 11:47 What does it actually mean to be "skinny fat"? 14:06 The real reason some people end up "skinny fat" 15:58 Why people carrying more fat might actually be happier 18:10 How visceral fat sends inflammatory signals through your body 21:50 Why having almost no body fat can also make you unhealthy 25:19 Could a supermodel have more visceral fat than a sumo wrestler? 26:44 Why your body stores visceral fat around your organs on purpose 28:08 Why visceral fat is the first fat to disappear when you diet 29:22 How your diet directly reshapes the fat in your body 33:25 How long it actually takes to change your body fat 35:47 Does Ozempic actually get rid of visceral fat? 37:05 Why dieting alone can quietly cost you muscle 38:55 What does yo-yo dieting actually do to your body? 41:20 The pattern he sees again and again in long-term dieters 42:39 Why being thin is no guarantee you don't have visceral fat 44:07 Why diet alone won't get rid of visceral fat 45:24 The exact mechanism that makes exercise target visceral fat first 49:03 Why inflammation and visceral fat together wreck your metabolism 49:50 Why any amount of alcohol is bad news for visceral fat 51:32 How fast visceral fat can actually shrink (as little as 12 weeks) 54:14 Why menopause redistributes fat to your belly 57:20 Resistance training: the single best thing for visceral fat 📚Books by our ZOE Scientists The Food For Life Cookbook Every Body Should Know This by Dr Federica Amati The Appetite Reset by Dr Federica Amati Food For Life by Prof. Tim Spector Ferment by Prof. Tim Spector Good Mood Food (preorder) by Prof. Tim Spector Free resources from ZOE The Smart Snacking Guide: How to feed your gut, fuel your day, and snack without guilt The Hormone Harmony Guide: Tuning Your Body’s Internal Orchestra Eating for Better Brain Health: Your brain-gut blueprint How to eat in 2026 - Discover ZOE’s 8 nutrition principles for long-term health Live Healthier: Top 10 Tips From ZOE Science & Nutrition Gut Guide - For a Healthier Microbiome in Weeks Better Breakfast Guide Mentioned in today's episode Fat cell turnover in humans, Nature (2008) New study investigates ‘optimal’ diets for healthy aging Study of visceral, subcutaneous, liver and pancreas fat changes after 12 weeks, Diabetes Research and Clinical Practice (2023) MRI assessment of adipose tissue fatty acid composition, Obesity (2024) Phenotyping, Body Composition, and Precision Nutrition (2024) Have feedback or a topic you'd like us to cover? Let us know here. Episode transcripts are available here.