Episode
#304 - Did Low-Fat Diets Drive the Obesity Epidemic? | Dr. Arne Astrup & Mike Haney
- Podcast
- LEVELS – A Whole New Level
- Published
- Jul 30, 2026
- Duration seconds
- 4674
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Summary
For decades, we've been told that eating less fat is one of the healthiest things we can do. That advice reshaped the foods we buy, the way we think about weight loss, and even how parents feed their children. But what if we misunderstood fat in the first place? In this episode, nutrition researcher Dr. Arne Astrup traces how the war on fat began, why many of its core assumptions haven't held up under decades of research, and what we've learned instead. Rather than asking whether fat is "good" or "bad," he argues that the more useful questions are: What foods actually keep us healthy? Why do some people gain weight more easily than others? And what happens when we reduce nutrition to single nutrients instead of whole foods? Free course: Improve your metabolic health Get our free email course on how glucose, nutrition, exercise, sleep, and measurement can help you build habits that support better energy and long-term health: https://levels.link/wnl 🎙️ About the Guest: Dr. Arne Astrup is a physician, nutrition researcher, and Professor Emeritus at the University of Copenhagen whose research focuses on obesity, appetite regulation, dietary fats, and cardiometabolic health. He previously chaired the Danish Nutrition Council and helped lead Denmark's landmark ban on industrial trans fats. 📍What Dr. Arne Astrup & Mike Haney discussed: 00:00 Introduction 01:03 How fear of fat became public health policy 07:40 Did low-fat advice help create today's processed foods? 10:20 Denmark's trans fat ban and one lesson nutrition got right 14:00 "I was wrong." Why dietary fat isn't the main driver of obesity 18:45 Why your body fat isn't simply the fat you eat 27:00 Why fat can help you eat fewer calories 32:00 Are nuts actually easy to overeat?…