Excited to announce my new book ADAPTABLE coming this Spring!

2016 Falcons feeling pretty good about themselves today

Fun human evolution connection: vitamin A poisoning likely killed a H erectus female 1.7 million years ago (they didn’t have twitter docs to save them) humanorigins.si.edu/evidence…

!!Announcing the next round of Isotope Grants for DLW projects!! Successful proposals get free isotopically enriched water for human DLW studies. Proposals due Sept 1. Details & application here: sites.duke.edu/pontzerlab/dl…

Honored to be elected a @aaas Fellow! More important than ever to promote solid science and communicate it widely. trinity.duke.edu/news/duke-p…

In this episode, evolutionary anthropologist Dr. Herman Pontzer (@HermanPontzer) of the world's leading researchers on human metabolism and energy expenditure at Duke University—joins the show to share what decades of fieldwork with the Hadza hunter-gatherers of Tanzania have revealed about how our bodies really work. We explore what hunter-gatherers actually eat (spoiler: it's not the all-meat paleo diet you've been sold), why the healthiest hearts ever measured belong to a community whose staple foods are unrefined carbohydrates, and the shocking finding that the Hadza—despite walking up to 19,000 steps a day—burn no more calories than sedentary Americans. Dr. Pontzer explains his groundbreaking "constrained energy" model and why your body quietly reallocates energy from inflammation, stress hormones, and reproductive functions when you exercise more, rather than simply burning extra fuel. We also dive into Dr. Pontzer's landmark Science paper on metabolism across the human lifespan, which upends the popular belief that a slowing metabolism causes middle-age weight gain. The data from over 6,000 people show that your metabolic rate holds remarkably steady from your mid-20s all the way into your late 50s—meaning diet, not metabolism, is what's really driving the obesity crisis. Dr. Pontzer shares practical takeaways: prioritize minimally processed foods, get your fiber and protein, and stop blaming your metabolism for weight gain. The conversation closes with a powerful reflection on what modern life has lost—community, presence, and a healthier relationship with time—drawn from his years living among the Hadza. Dr. Pontzer also introduces his new book Adaptable, a guide to understanding human biology through the lens of evolution. Timestamps 00:00 Introduction to Human Metabolism and Energy Expenditure 02:35 Hunter-Gatherer Diets: What Do They Really Eat? 09:38 The Role of Honey in the Hadza Diet 10:25 Translating Evolutionary Diets to Modern Contexts 12:14 Health Status of Hunter-Gatherers 14:50 Lipid Profiles and Heart Health in Hunter-Gatherers 19:26 Adaptations of Arctic Diets: The Inuit Example 21:45 Variability in Animal Source Foods Among Hunter-Gatherers 24:29 Debunking Dietary Myths 29:11 Energy Expenditure and the Hadza 32:58 Metabolism Across the Lifespan 42:07 Nutritional Insights from Hunter-Gatherers 47:14 Lessons from the Hadza: Community and Time 50:14 Introducing 'Adaptable': Understanding Human Biology

Yes, people training for ultras burn more energy each day than normies. We’ve shown that too: cell.com/current-biology/abs…

This kind of “race science” for grades or IQ is why everyone should read #Adaptable Group diffs on tests tell us nothing about underlying biology - but that’s how they’re used.

Excited to see this. Heard a great talk recently by @DanielJDrucker on the many positive non-weight-loss related effects of GLP1s. Receptors for GLP1 are everywhere! Lots more to discover