Why Some People Stay Lean Without Trying (The Genetics of Fat Loss) with Dr. Stephan Guyenet | Ep 214
Are you frustrated by the stubborn body fat that won&apost come off despite all your efforts? Do you ever wonder if it&aposs all due to lack of discipline, or could there be a deeper reason? And how much do your genetics actually play a role in your fat loss journey?
Philip (@witsandweights) dives into the fascinating world of neuroscience and body composition with special guest Dr. Stephan Guyenet, a neuroscientist, obesity researcher, and author of The Hungry Brain. They explore the science behind why some people struggle more than others to lose weight and how genetics might be the hidden force shaping your body fat levels. Dr. Guyenet also breaks down how the brain’s reward system influences your cravings and reveals how minor tweaks to your environment and habits can make a huge difference in your fat loss efforts.
Dr. Stephan Guyenet has spent over a decade studying the neuroscience of obesity. With a PhD in neuroscience, his work focuses on the brain&aposs role in regulating body fat and how our modern environment contributes to weight gain. He is also the founder of Red Pen Reviews, which provides scientific accuracy scores for popular health and nutrition books.
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Today, you’ll learn all about:
2:07 Genetics vs. environment: What really causes differences in body fat?
3:48 When do genetic predispositions for body fat develop?
7:56 Why we care about body fat: Individual health and misinformation
11:58 Muscle mass and body fat: How energy overload impacts health
17:24 How your brain regulates hunger and satiety
29:53 Metabolic adaptation during fat loss
32:42 The carbohydrate-insulin model of obesity debunked
44:05 Making body composition changes easier and frictionless
51:54 Insights from studying naturally lean people
54:33 Where to find Stephan
54:49 Outro
Episode resources:
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