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

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

10% Happier with Dan Harris
May 11, 2026 1h 6m
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About this episode

<p dir="ltr">Creatine, melatonin, peptides, protein powders, green powders, probiotics, multivitamins, and much more: A pharmaceutical scientist breaks down the evidence and busts the myths.</p> <p dir="ltr"><a href="https://mahtabjafari.com/">Dr. Mahtab Jafari</a> 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, <em><a href= "https://www.amazon.com/Truth-About-Dietary-Supplements-Evidence-Based/dp/1950043339"> The Truth About Dietary Supplements: An Evidence- Based Guide to a Safer Medicine Cabinet</a></em>.  </p> <p dir="ltr">In this episode we talk about:</p> <ul> <li dir="ltr" role="presentation">Product quality, safety, and regulation</li> <li dir="ltr" role="presentation">The most important thing to do before starting dietary supplements</li> <li dir="ltr" role="presentation">Vitamins B, C, and D (and the multivitamin debate)</li> <li dir="ltr" role="presentation">The research on amino acids and peptides</li> <li dir="ltr" role="presentation">The truth behind sleep supplements</li> <li dir="ltr" role="presentation">The efficacy of herbs, botanicals, and green powders</li> <li dir="ltr" role="presentation">Heavy metal risk factors</li> <li dir="ltr" role="presentation">Supplements for brain health and muscle growth</li> <li dir="ltr" role="presentation">Probiotics and gut health</li> </ul> <p dir="ltr">Get the 10% with Dan Harris app <a href= "https://app.danharris.com/membership">here</a></p> <p dir="ltr">Sign up for Dan's free newsletter <a href= "http://www.danharris.com/">here</a></p> <p dir="ltr">Follow Dan on social: <a href= "https://bit.ly/3tGigG5">Instagram</a>, <a href= "https://bit.ly/3FOA84J">TikTok</a></p> <p dir="ltr">Subscribe to our <a href= "https://bit.ly/3FybRzD">YouTube Channel</a></p> <p dir="ltr">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. <a href= "https://www.92ny.org/event/dan-harris-with-allison-gilbert">Register here.</a></p> <p dir="ltr">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 <a href= "https://www.eomega.org/workshops/meditation-party">here</a>, or sign up to livestream <a href= "https://www.eomega.org/workshops/meditation-party-livestream">here</a>!<br /> <br /> This episode is sponsored by: </p> <p dir="ltr">BetterHelp: Find support and have someone with you in therapy. Sign up and get 10% off at <a href= "https://betterhelp.com/happier">BetterHelp.com/happier</a>.</p> <p dir="ltr">Fast Growing Trees: Get 20% off your first purchase when using the code HAPPIER at checkout, <a href= "http://fastgrowingtrees.com/">fastgrowingtrees.com</a>.<br /> <br /> Warby Parker: Buy one prescription pair and get 20% off any additional prescription pairs at <a href= "http://warbyparker.com/happier">warbyparker.com/happier</a>. </p> <p dir="ltr">To advertise on the show, contact sales@advertisecast.com or visit <a href= "https://advertising.libsyn.com/10HappierwithDanHarris">https://advertising.libsyn.com/10HappierwithDanHarris</a></p>

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