The Science of Supplements: What Works, What's Hype, and What Could Actually Harm You | Dr. Mahtab Jafari episode artwork

EPISODE · May 11, 2026 · 1H 6M

The Science of Supplements: What Works, What's Hype, and What Could Actually Harm You | Dr. Mahtab Jafari

from 10% Happier with Dan Harris

Creatine, melatonin, peptides, protein powders, green powders, probiotics, multivitamins, and much more: A pharmaceutical scientist breaks down the evidence and busts the myths. Dr. Mahtab Jafari is a Professor of Pharmaceutical Sciences and Ecology & Evolutionary Biology at the University of California, Irvine, and the Founding Director of the UC Irvine Center for Healthspan Sciences. She is the author of the award-winning book, The Truth About Dietary Supplements: An Evidence- Based Guide to a Safer Medicine Cabinet.   In this episode we talk about: Product quality, safety, and regulation The most important thing to do before starting dietary supplements Vitamins B, C, and D (and the multivitamin debate) The research on amino acids and peptides The truth behind sleep supplements The efficacy of herbs, botanicals, and green powders Heavy metal risk factors Supplements for brain health and muscle growth Probiotics and gut health Get the 10% with Dan Harris app here Sign up for Dan's free newsletter here Follow Dan on social: Instagram, TikTok Subscribe to our YouTube Channel Join Dan and Emmy Award-winning journalist Allison Gilbert at 92NY on May 17th for a live conversation about how mindfulness can deepen connection and combat loneliness, available in person and via streaming. Register here. Join Dan, Sebene Selassie, and Jeff Warren for Meditation Party, a 3-day immersive retreat at the Omega Institute in Rhinebeck, NY, October 16–18. Grab your in-person spot here, or sign up to livestream here! This episode is sponsored by:  BetterHelp: Find support and have someone with you in therapy. Sign up and get 10% off at BetterHelp.com/happier. Fast Growing Trees: Get 20% off your first purchase when using the code HAPPIER at checkout, fastgrowingtrees.com. Warby Parker: Buy one prescription pair and get 20% off any additional prescription pairs at warbyparker.com/happier.  To advertise on the show, contact [email protected] or visit https://advertising.libsyn.com/10HappierwithDanHarris

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The Science of Supplements: What Works, What's Hype, and What Could Actually Harm You | Dr. Mahtab Jafari

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