How to poop better, according to a gastroenterologist

In this engaging and candid episode of Science Friday, host Flora Lixman explores the science of bowel movements with Dr. Trisha Pasricha, a neurogastroenterologist and author of 'You've Been Pooping All Wrong.' The conversation dismantles the stigma around discussing poop, revealing how modern habits—like using smartphones in the bathroom and sitting on Western-style toilets—can harm gut health and contribute to hemorrhoids and constipation. Dr. Pasricha explains the biomechanics of optimal pooping, advocating for elevated knees (via a stool or books) to mimic the natural squatting position that aligns the colon and reduces strain. She also addresses alarming stool colors, emphasizing that white or clay-colored stool can signal a serious bile duct blockage, while red or black tarry stools may indicate bleeding. The episode delves into the gut-brain connection, highlighting groundbreaking research linking early gastrointestinal symptoms—like chronic constipation—to Parkinson’s disease, potentially years before diagnosis. Dr. Pasricha also warns about the rising rates of early-onset colorectal cancer in people under 50, tied to diets high in ultra-processed foods and sugar-sweetened beverages, and urges listeners to discuss symptoms with doctors early, regardless of embarrassment. With humor and scientific rigor, the episode turns a taboo topic into a vital conversation about health and self-advocacy.