*Content warning up top: This episode discusses sensitive themes like diet culture, caloric intake, the psychological & physical effects of food restriction and includes many listeners’ personal experience with the term “obesity." It may be triggering for those with a history of or sensitivity to disordered eating. We also discuss the Body Mass Index, still used by medical professionals, but acknowledged by many sociologists to be rooted in structural oppression.*Let’s explore our human machinery. And talk about Brazilian butt lifts. Professor of Evolutionary Anthropology and metabolism researcher Dr. Herman Pontzer gives us the data on mitochondrial backstories, muscle mass and hormones, our expanding brains, the flaws of the Body Mass Index, humans’ relationships with nutrition, why crash dieting can change your metabolism, perspectives on sticky medical terms, isotope magic, how much exercise hunter gatherers get, carnivore diets, scales, and what to do if you're grappling with sadness. Visit the Pontzer Lab websiteBrowse Dr. Pontzer’s papers on ResearchGate and follow him on Instagram and XBuy Dr. Pontzer’s book, Burn: New Research Blows the Lid Off How We Really Burn Calories, Stay Healthy, and Lose WeightA donation went to Hadza FundMore episode sources and linksSmologies (short, classroom-safe) episodesOther episodes you may enjoy: Pyrotechnology (FIREMAKING), Entomophagy Anthropology (EATING BUGS), Kalology (BEAUTY STANDARDS), Genicular Traumatology (BAD KNEES)Sponsors of OlogiesTranscripts and bleeped episodesBecome a patron of Ologies for as little as a buck a monthOlogiesMerch.com has hats, shirts, hoodies, totes!Follow @Ologies on Instagram and XFollow @AlieWard on Instagram and XEditing by Mercedes Maitland of Maitland Audio ProductionsTranscripts by Aveline Malek and The WordaryWebsite by Kelly R. DwyerTheme song by Nick Thorburn