Huberman LabControl Stress for Healthy Eating, Metabolism & Aging | Dr. Elissa Epel
CHAPTERS
- 0:00 – 19:00
Intro, Guest Background, and Episode Overview
Huberman introduces the podcast, his affiliation, and his guest, Dr. Elissa Epel, a UCSF psychiatrist and director of the Center on Aging, Metabolism, and Emotions. He previews the episode’s focus on stress, aging, metabolism, stress-related eating, and sex and status differences in stress responses, and then reads sponsor messages.
- •Huberman frames the episode around science-based tools for controlling stress to impact aging, metabolism, and behavior.
- •Epel’s work on stress, telomeres, and behavior (especially food choices) is highlighted.
- •Listeners are told they’ll learn to distinguish types of stress, mitigate harmful effects, and harness positive stress.
- •Sponsor segments: customized nootropics (Thesis), thermoregulation for sleep (Eight Sleep), exogenous ketones (Ketone IQ), and supplements (Momentous).
- 19:00 – 29:30
What Stress Is—and Isn’t: Types, Responses, and Rumination
Epel defines stress in technical and practical terms, distinguishing between good vs. bad, acute vs. chronic stress, and emphasizing that our interpretation and response matter more than the stressor itself. She explains how chronic cognitive engagement with threats—especially rumination—keeps the stress response alive long after events end.
- •Technical definition: stress arises when perceived demands exceed perceived resources; subjectively, it’s feeling overwhelmed.
- •Acute stress responses that mobilize energy and then resolve are adaptive and necessary for survival.
- •Modern life often keeps the stress response chronically activated via thoughts, worry, and mental rehearsal of threats.
- •Body signals like clenched hands, tensed shoulders, and persistent vigilance can reveal stress even when we don’t ‘feel’ stressed.
- •Epel notes population patterns: older adults (>65) tend to report less stress than young adults; marginalized groups report especially high stress.
- 29:30 – 43:00
Tools to Stop Overthinking: Top‑Down, Body‑Based, and Environment
Responding to Huberman’s question about managing stress-driven thought loops, Epel outlines three buckets of tools: cognitive strategies to shift beliefs and mindsets, body‑based strategies to change physiology (and thereby mental state), and environmental changes that provide safety signals. They also discuss the unique role of breathing as a bridge between conscious and unconscious control.
- •Top‑down tools: awareness of mind habits, reappraisal (“stress can help me cope”), self‑compassion, and mindset shifts.
- •Body-to-mind tools: exercise, breathwork, NSDR, yoga—these calm the amygdala and increase somatosensory engagement.
- •Scene-changing tools: stepping away from cues that re-trigger stress; creating a ‘safe corner’ with calming photos, pets, scents, and music.
- •Huberman underscores breathing as uniquely under both automatic and voluntary control, making it a powerful lever for state change.
- •Epel emphasizes that people need to experiment; no single anti‑rumination tool works for everyone.
- 43:00 – 53:00
Stress Dosage and Aging: Why Zero Stress Is Not Optimal
The discussion turns to how stress relates to biological aging and telomeres. Epel describes research showing that chronic toxic stress accelerates aging, but total absence of stress is also associated with poorer cognitive outcomes. Moderate, manageable stress that includes challenge and purpose supports ‘optimal aging.’
- •Epel’s graph distinguishes optimal, typical, and accelerated aging trajectories as a function of stress exposure and coping.
- •Older adults who re-engage in meaningful, challenging roles (e.g., tutoring at-risk youth) show hippocampal growth and improved sense of purpose.
- •National data show that people who report “no stressors” often have lower cognitive performance, suggesting under-engagement.
- •Analogy to exercise: acute stressors temporarily raise blood pressure and cortisol but, with recovery, improve resilience and capacity.
- •The central question shifts from ‘how do I avoid stress?’ to ‘how do I build stress fitness and recover well?’
- 53:00 – 1:11:00
Threat vs. Challenge Response: Mindset, Physiology, and Aging
Epel explains that not all stress responses are equal: threat responses are linked to vasoconstriction, slower recovery, and higher inflammation, whereas challenge responses involve increased cardiac output and better problem-solving. Mindset and self-talk can tip the body toward one pattern or the other, with measurable consequences for inflammation and telomere biology.
- •Threat response: over-reactive survival mode; social or ego threat can produce intense vasoconstriction and gut-level distress.
- •Challenge response: energized, excited state (“I can do this”), with different hemodynamics and better cognitive performance.
- •Studies show that challenge responders have lower post-stress inflammation and longer telomeres compared to threat responders.
- •Reappraisal training—viewing stress as helpful—improves performance, mood, and physiological recovery in lab stress tasks.
- •Practical ‘stress shield’ statements include: “I’ve handled tough things before,” “This is an opportunity to grow,” and “My body’s response is useful energy.”
- 1:11:00 – 1:27:30
Stress, Eating Phenotypes, and the Opioid/Reward System
The conversation pivots to stress-related eating. Huberman notes he tends to under-eat under stress. Epel contrasts this ‘high sympathetic, appetite-suppressed’ profile with the more common stress-eating profile, where stress drives cravings for hyper-palatable foods, engages the reward and endogenous opioid systems, and promotes abdominal fat and metabolic syndrome.
- •Under high sympathetic activation, digestion shuts down and food becomes less appealing—Huberman’s pattern.
- •Many people, however, overeat under stress, especially high-fat, high-sugar, high-salt foods (‘comfort food’).
- •Chronic stress plus access to palatable foods in animals leads to binge patterns, compulsive intake, and intra-abdominal fat accumulation.
- •In humans, a ‘reward-drive’ or compulsive eating phenotype is common in obesity: lots of cravings, preoccupation with food, poor satiety.
- •Rajita Sinha’s work shows that under stress, people with higher insulin resistance and obesity have greater reward area activation.
- •Naltrexone/Wellbutrin combinations can reduce compulsive eating in some; but Epel stresses the need for behavioral and environmental interventions first.
- 1:27:30 – 1:44:00
Sugary Drinks, Food Environment, and Public Health Strategy
They drill into the outsized role of sugary drinks and processed foods in metabolic disease. Epel likens liquid sugar to a faster, more addictive delivery system, and describes UCSF’s decision to remove sugary beverages from hospitals. They also discuss how rebellion and exposing industry tactics can be leveraged to change behavior, especially in youth.
- •Liquid sugar has rapid brain and metabolic effects, making sugary drinks particularly harmful and addiction-like.
- •Removing sugary beverages from UCSF campuses reduced waist circumference and improved health among heavy soda drinkers.
- •Those with strong compulsive tendencies needed extra motivational interviewing to change behavior.
- •Big Food and Big Pharma exert powerful forces that undermine health; information alone is insufficient without environment change.
- •Stice and others show that exposing people with eating disorders to evidence of food industry manipulation reduces symptoms and reward drive.
- •Huberman notes that anti-smoking campaigns that revealed industry cynicism were more effective than health-fright messaging alone; a similar approach may help with processed foods.
- 1:44:00 – 1:58:00
Mindful Eating, Craving Regulation, and the Body Scan
Epel shares practical tools for those with stress-driven or compulsive eating. She details mindful eating techniques, “urge surfing,” and environmental controls, and describes studies showing that a simple body scan—shifting attention inward—can significantly reduce cravings by interrupting the tight coupling between external cues and internal urges.
- •Mindful eating training includes hunger/emotion labeling, 1–10 hunger scales, and slowing down to sense satiety and emotional triggers.
- •‘Surfing the urge’ teaches people to observe cravings without acting on them, letting them rise and fall like waves.
- •Changing the scene—physically moving away from food, redesigning the home and workplace food environment—is critical.
- •UCSF’s soda removal experiment underscores how default availability drives consumption.
- •Body scan practices—systematic attention from head to toe, breathing into tense areas—reduce cravings, likely by shifting brain networks from self-referential and reward circuits to interoceptive, somatosensory networks.
- •Taste-based exercises (eating a Twinkie vs. high-quality chocolate mindfully) reveal ‘reward prediction errors’ and help re-calibrate perceived vs. actual pleasure from ultra‑processed foods.
- 1:58:00 – 2:14:00
Pregnancy, Mindfulness, and Multi-Generational Metabolic Effects
Epel describes a long, complex trial of mindfulness and mindful movement training in pregnant women with overweight or obesity. While the intervention didn’t prevent excess gestational weight gain, it significantly improved glucose metabolism, infant health, and maternal mental health for years, suggesting that pregnancy is a powerful window for stress and metabolic intervention.
- •Randomized trial: pregnant women received 8 weeks of mindfulness (breathing, body checks, prenatal yoga or mindful movement) vs. control.
- •Gestational weight gain did not differ between groups, but impaired glucose tolerance was halved in the mindfulness group.
- •Babies of mindful mothers had lower obesity rates, fewer early-life illnesses, and healthier stress responses.
- •Mothers in the mindfulness group reported less depression and stress immediately after and up to eight years later.
- •Intervention hinged on short, frequent ‘check-ins’: close eyes, feel body, label emotions, do slow breathing, movement, and hands-on-belly awareness.
- •Pregnancy is a sensitive window where small changes in maternal stress and physiology can have outsized effects on offspring.
- 2:14:00 – 2:28:00
Meditation, Psychedelics, and Long-Term Biological Aging Markers
The discussion broadens to meditation and its measurable effects on inflammatory gene expression, telomerase, and aging. Epel references retreat-based and cross-sectional studies, and she and Huberman contrast daily meditation with psychedelic-assisted therapies, noting that both likely work through windows of enhanced plasticity that extend beyond the acute experience.
- •Retreat studies (e.g., Deepak Chopra’s week-long programs) show large shifts in gene expression patterns associated with reduced inflammation.
- •Both meditators and non-meditating retreat controls felt great after a week off screens and eating anti-inflammatory diets, but long-term benefits were stronger in meditation-trained participants.
- •Long-term meditators often show higher telomerase activity and, in some studies, longer telomeres, implying slower cellular aging.
- •Psychedelic experiences may open a plasticity window; integration practices afterward likely drive actual rewiring, mirroring what repeated meditation does more gradually.
- •Meditation experience can make psychedelic journeys safer and more navigable by providing metacognitive skills for observing thoughts and sensations.
- 2:28:00 – 2:37:00
Mitochondria, Daily Mood, and Energy Depletion in Caregivers
Epel describes work with Martin Picard assessing mitochondrial health in mothers of neurotypical children and mothers caring for children with autism. Caregivers showed depressed mitochondrial function, but those who maintained more positive daily emotion, especially in the evening, had better mitochondrial indices, suggesting a real-time connection between mood and cellular energy systems.
- •Mitochondrial health index is derived from enzyme measures adjusted for mitochondrial number in blood cells.
- •Caregivers of children with autism had markedly reduced mitochondrial function, matching their self-reported exhaustion.
- •Within caregivers, those with higher positive affect, particularly at night, had better mitochondrial activity on the same day.
- •Daily diary work shows that evening positive emotion after a stressful day predicts better long-term mental and physical health.
- •Findings imply that short-lived affective states may be continually shaping mitochondrial function and, by extension, overall energy and resilience.
- 2:37:00 – 2:54:00
Radical Acceptance, Uncertainty, and Dropping the Rope
They address how to cope with chronic, non-negotiable stressors like caregiving or unchangeable family situations. Epel introduces metaphors such as pulling a rope tied to a brick wall and surfing waves, emphasizing radical acceptance, wise discernment about where control is possible, and building tolerance for uncertainty as core resilience skills.
- •Chronic mental efforts to change unchangeable situations create ongoing stress physiology and accelerate aging (shorter telomeres).
- •Epel’s metaphor: pulling hard on a rope attached to a brick wall only chafes your hands; dropping the rope frees energy for where you do have influence.
- •Caregiver studies show that night-time ‘negative mind-wandering’ (wishing things were different) predicts lower happiness and shorter telomeres; being engaged in present activities predicts better outcomes.
- •Uncertainty intolerance strongly predicted anxiety, PTSD, depression, and climate/fire distress during the pandemic.
- •Practices include explicitly listing uncontrollable vs. controllable stressors, adopting postures of receptivity (leaning back, slow breathing), and reframing uncertainty as mystery and potential rather than pure threat.
- 2:54:00 – 3:09:00
Positive Stress and the Wim Hof Method Study
In the final substantive section, Epel describes her interest in ‘positive stress’ (hormetic challenges) and an ongoing study comparing Wim Hof breathing and exercise to low‑arousal practices like mindfulness and slow breathing. Early results show that both high- and low-arousal interventions substantially reduce stress, anxiety, and depression, but via distinct physiological pathways.
- •Epel has long been interested in beneficial stressors that build stress fitness, beyond exercise alone.
- •She encountered Wim Hof, tried his breathing method, and experienced strong positive affect, prompting collaborative research.
- •Current RCT compares high-arousal (Wim Hof breathing, exercise) vs. low-arousal (mindfulness, slow breathing) over three weeks.
- •Preliminary findings: all interventions significantly decrease stress, anxiety, and depression; Wim Hof and other high-arousal tools also produce rising daily positive emotion.
- •Physiological profiles (autonomic measures, possibly telomerase, mitochondrial enzymes, and broad gene expression via platforms like SomaLogic) differ by condition, suggesting multiple distinct routes to resilience.
- •They aim to identify how specific brain–body pathways are engaged by different practices, to better personalize stress interventions.
- 3:09:00
Closing Reflections and Resources
Huberman thanks Epel, highlights her book The Stress Prescription, and reiterates the importance of combining body-based and cognitive tools to manage stress and aging. He closes with standard podcast housekeeping: where to find Epel’s work, how to support the podcast, and where to access Huberman Lab resources and newsletters.
- •Mutual appreciation for combining rigorous lab work with real-world tools like breathwork and mindfulness.
- •Epel emphasizes that drugs cannot substitute for learning to use our nervous system’s full range; non-pharmacological interventions are central.
- •Resources mentioned: Epel’s books (The Telomere Effect, The Stress Prescription), Huberman Lab newsletter and toolkits.
- •Standard reminders about subscribing, leaving reviews, checking sponsors, and following on social media.
