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Health, Longevity & Biohacking

Gastroenterologist Claims Exercise Is Most Effective Therapy for IBS Over Medications

The Mel Robbins Podcast · The Hidden Reason You Feel Exhausted & How to Feel Better Now · June 8, 2026
Gastroenterologist Claims Exercise Is Most Effective Therapy for IBS Over Medications
The Mel Robbins Podcast
The Mel Robbins Podcast
The Hidden Reason You Feel Exhausted & How to Feel Better Now
"Exercise, it turns out, is the most effective therapy we have for IBS by far. Tai chi, yoga, osteopathic medical interventions, strength training, swimming, running, randomized control trial after trial shows that this is the most effective therapy we have."
Dr. Brennan Spiegel, a leading gastroenterologist at Cedars-Sinai, revealed that exercise consistently outperforms other treatments for irritable bowel syndrome in randomized controlled trials. This challenges conventional medical approaches that typically prioritize medications and dietary restrictions for IBS treatment, suggesting physical activity targeting gravity management should be first-line therapy.

About this episode

On this episode of the Mel Robbins Podcast, host Mel Robbins interviewed Dr. Brennan Spiegel, director of health services research at Cedars-Sinai Medical Center and one of the most cited gastroenterologists in the world, about his groundbreaking research connecting gravity to widespread health issues. Dr. Spiegel introduced the concept of gravity intolerance, arguing that conditions including IBS, chronic pain, anxiety, depression, fatigue, and digestive problems are not separate diseases but rather manifestations of the body's inability to properly manage gravitational forces. He revealed that exercise is the most effective therapy for IBS according to randomized controlled trials, contradicting conventional pharmaceutical approaches. The conversation covered surprising connections, including that 95% of the body's serotonin comes from the gut rather than the brain, and that joint hypermobility (like bending your pinky back far) indicates internal stretchiness that causes organs to compress under gravity, leading to digestive dysfunction. Dr. Spiegel shared practical interventions including the STACK10 diet (salmon, turkey, avocado, chicken, chickpeas, kidney beans, tempeh, tofu, eggs, nuts) to boost serotonin production, wearing weighted vests and ankle weights to train the body for greater gravitational load, and the dead hang challenge of hanging from a bar for one minute to build grip strength. He emphasized that the ability to stand on one leg for at least 10 seconds directly predicts longevity, particularly in older adults. The episode reframed common health complaints not as personal failures but as physics problems with practical solutions centered on strengthening the body's relationship to Earth's gravitational pull through posture, exercise, hydration, and awareness.

Key takeaways

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