Topic
Mood, anxiety, psychiatry, and the biology behind how we feel.
Sleep deprivation degrades ethical judgment and decision-making in novel situations, contributing to disasters from train crashes to BP's 2005 explosion. Chronic pain, meanwhile, is reshaped by fear, relationships, and mindset as much as by tissue damage, per sleep researcher Chris Barnes and pain psychologist Rachel Zoffness.
Neuralink's head neurosurgeon Matt MacDougall explains that the implant's first job is letting quadriplegic patients move a cursor and type by thought alone, not reconnect limbs. He also covers the robotic surgery that makes this possible, the safety case made in pigs and monkeys, and his own subdermal RFID chip.
Singer-songwriter Allison Russell, raised by a white supremacist abuser after Quebec's child-protection system returned her to her mother's custody, describes how chosen family, art, and motherhood helped her return to her body after trauma. She frames scars as proof of survival, reframes PTSD as a bodily response rather than an inner demon, and ties her healing to activism against gun violence and minority rule in Tennessee (41:53, 55:35).
Perimenopause can start around age 35 and run for a decade before periods stop, yet fewer than 6% of doctors are trained to treat it. Urologist Dr. Rachel Rubin explains why standard hormone tests mislead, debunks the 2002 Women's Health Initiative scare, and lays out a four-part hormone therapy toolbox, including cheap vaginal estrogen that cuts UTI hospitalizations by over half.
Psychologists George Loewenstein and Alison Ledgerwood argue that most unhappiness starts inside the mind, not from outside events. Loewenstein traces it to the hedonic treadmill and guilt over our own feelings; Ledgerwood traces it to a negativity bias built to spot threats. Their shared fix: notice good moments without suppressing bad ones, and ask whether a reaction fits now or an old pattern (96:51).
Neuroscientist Lara Boyd says experience, not any drug, is the brain's biggest driver of change. Her research shows plasticity peaks when a task is hard enough to succeed only half the time, and that sleep, exercise, and lower cortisol all expand the brain's capacity to rewire at any age.
Postpartum OCD causes unwanted, intrusive thoughts about harming a baby, not a desire to act. CNN anchor Pamela Brown and OB-GYN Dr. Mary Claire Haver distinguish it from postpartum psychosis, a break from reality involving voices (42:59), and cover GLP-1 fertility effects, testosterone therapy, and vaginal estrogen's role preventing UTIs (35:52).
Psychologist Elissa Epel says stress is simply when demands exceed our resources, and most modern stress comes from our own thoughts. She shows how a challenge mindset, radical acceptance, and small daily practices like 'dropping the rope' change inflammation, telomere length, and mitochondrial energy output measurably.
Stanford urologist Michael Eisenberg says male hormone health is a window into long-term health, not just sex or fertility. He covers testosterone's normal range, the lifestyle habits that raise or lower it, erectile dysfunction treatments, and why global sperm counts keep falling, with evidence that an active sex life and a steady partner both predict a longer life.
Carson Tueller, paralyzed at 23 after a trampoline accident, argues that most of disability's suffering comes from ableism, not the body itself. He reframes his injury as a "rebirth," separates the social model of disability from the medical model, and explains why inspiration porn and scripted sex both keep people from their true, undamaged self.
Breast surgeon Lucy de la Cruz explains how dense breast tissue hides cancer from mammograms and what surgical choices patients are rarely offered. Georgetown University Hospital's de la Cruz covers density categories, lumpectomy versus mastectomy recurrence odds, direct-to-implant reconstruction, and nerve grafts that restore nipple sensation within one to two years.
Dr. Jolene Brighten says ADHD in women often surfaces in perimenopause, when falling estrogen stops masking lifelong symptoms. Estrogen supports dopamine and acetylcholine, so its decline during the luteal phase and perimenopause worsens executive function, mood, and focus, explaining why many women are diagnosed only in their 30s and 40s.
Pregnancy stresses the heart, kidneys, and metabolism so hard that its complications predict a woman's cardiovascular and diabetes risk decades later. Maternal-fetal medicine specialist Kathryn Gray explains how plasma volume surges 50%, how preeclampsia's placental biology works, and why half of gestational diabetes cases become type 2 diabetes.
Stanford health psychologist Kelly McGonigal says joy is a biological capacity to feel uplifted, not a reward for a perfect life. A meta-analysis of 93 studies and over 1 million people links joy to five to eight extra years of life, and she says cynicism, not busyness, is the biggest barrier to feeling it.
Bill Ackman recounts his daughter Lucy's brain hemorrhage and the brain rehabilitation institute he built in response. He also details Pershing Square's investment checklist, its move away from short selling, and the plan to turn Howard Hughes into an insurance-driven holding company modeled on Berkshire Hathaway.
Menopause triggers a 30% collagen loss in skin within five years, driven by falling estrogen and steady testosterone levels. Dermatologist Erica Kelly explains the barrier breakdown behind dryness and jawline acne, and recommends sunscreen and retinoids as the best-evidenced treatments, with topical estriol and spironolactone for targeted fixes.
A six-minute subway encounter between Jordan Neely, a homeless man in mental crisis, and Daniel Penny, a former Marine, became a national Rorschach test. Journalist Anand Giridharadas argues both sides share the same wound: a feeling of being abandoned by every system meant to help them.
Martin Seligman argues that agency, the belief that our actions can change outcomes, is a skill built through specific exercises, not an inherited trait. He describes three tools, disputing catastrophic thoughts, graded task assignment, and writing about a best possible self, backed by decades of research on optimism and helplessness.
Divorce attorney James Sexton maps the six stages of divorce and gives scripts for telling a spouse and a 48-hour safety plan. He explains why an avoided conversation gets more expensive with time, why grief means the love was real, and how to actually help someone else going through it.
Psychologist Martin Seligman found that helplessness is learned, and so is optimism. His research links explanatory style to depression risk, predicts success at West Point and in sales, and traces a psychological theory of human progress from ancient Greece to St. Augustine to modern China.
Australia became the first country to let doctors prescribe MDMA and psilocybin for PTSD and depression, after a five-year campaign led by two entrepreneurs with no medical background. Tania de Jong and her husband built an advisory panel, trained 750 clinicians, and drove 13,000 public submissions, pushing the regulator to reclassify both drugs in February 2023.
Arthur Brooks argues happiness runs on three macronutrients: enjoyment, satisfaction, and meaning. Chasing money, power, pleasure, or honor as ends in themselves blocks all three (67:59), while struggle, leisure used on purpose, and naming one's true idol are what convert pleasure into lasting well-being.
Neuroscientist Richard Davidson says wellbeing is a trainable skill, not a fixed trait. He organizes this into four pillars (awareness, connection, insight, purpose) and shows five minutes of daily meditation for 28 days lowers IL-6, an inflammation marker, and shifts gut microbiome pathways; purpose best predicts longevity after age 70.
Scott Barry Kaufman closes 11 years and 478 episodes of The Psychology Podcast with seven lessons on human potential, personality change, and creativity. He argues neuroticism is the easiest Big Five trait to shift and openness the hardest, and that lasting change comes from habits, not willpower (09:06, 15:22).
Sleep cycles every 90 minutes, and early cycles release growth hormone and clean the brain, while later ones handle emotion and creativity. Neurobiologist Gina Poe explains how REM sleep silences the stress chemical norepinephrine, letting the brain separate emotion from memory, and why consistent bedtimes protect this whole system.
Stanford psychologist Alia Crum finds that beliefs about food, stress, illness, and genes can alter body chemistry itself. Labeling an identical milkshake indulgent rather than sensible triples the drop in the hunger hormone ghrelin (12:37), and believing one carries a low-efficiency exercise gene lowers real oxygen conversion regardless of actual genotype (47:10).
Regular arts engagement cuts depression risk in half over ten years and leaves brains measuring five to seven years younger than actual age, UCL research shows. Psychobiologist Daisy Fancourt's cohort studies tie the effect to dopamine, emotional distance from difficult art, and cognitive reserve, holding even with 10 to 20 minutes of daily practice.