Dalia El Khoury, Ph.D., RD: The Science Behind Dietary Supplements | Aging Less #26

Are supplements the secret to longevity—or just expensive placebos? From influencer-fueled trends to eye-catching labels at the pharmacy, the supplement industry is booming. But how much of it is actually backed by science?

This week on Aging Less: The Longevity Science Insights Podcast, host Sabrina Oktavelia is joined by Dalia El Khoury, Ph.D., RD, a registered dietitian and professor at the University of Guelph, to separate evidence from hype. Together, they explore what the science really says about supplements, how they can support (or sabotage) your long-term health, and what role they play in the broader pursuit of longevity.

Dalia El Khoury, Ph.D., RD’s research centers on functional foods, appetite regulation, glycemic control, and metabolism—making her the perfect guest to guide us through the noisy world of vitamins, minerals, and “miracle” capsules.

In this episode, Dalia El Khoury, Ph.D., RD breaks down what defines a supplement, how supplements need to be taken in caution, and the common myths that can mislead even health-conscious consumers. From omega-3s to probiotics, she highlights the nutrients with the most robust scientific backing—and cautions against those that might be doing more harm than good.

Sabrina and Dalia El Khoury, Ph.D., RD also discuss how to evaluate supplement quality, why personalization is key, and what healthcare providers wish more people knew before self-prescribing. Whether you’re a wellness enthusiast or just trying to future-proof your health, this episode offers clarity in an often-confusing space.

Tune in to learn which supplements are worth your money, which are better left on the shelf, and how to take a science-first approach to aging well.

Follow Dalia El Khoury, Ph.D., RD’s work on the following platforms:

Profile: https://family.uoguelph.ca/people/dalia-el-khoury 

Produced by the Longevity Science Labs, a division of LMSL, the Life Management Science Labs. 

Explore LMSL at https://lifemanagementsciencelabs.com/ and visit https://longevity.lifemanagementsciencelabs.com/ for additional information about Longevity Science Labs.

Follow us on social media to stay updated: YouTube: https://www.youtube.com/@Longevity.ScienceLabs  Facebook: https://www.facebook.com/longevity.science.labs/  Instagram: https://www.instagram.com/longevity.science.labs/  LinkedIn: https://www.linkedin.com/showcase/longevity-science-labs  Twitter: https://twitter.com/LOSciencelabs  TikTok: http://www.tiktok.com/@longevity.science.labs 

You can also subscribe and listen to our podcasts on your preferred podcasting platforms: Apple Podcasts: https://podcasts.apple.com/us/podcast/aging-less-the-longevity-science-insights-podcast/id1776041174 Spotify: https://open.spotify.com/show/4iPSCjvt7HegaUDPYy3U1q?si=44dab94bf8d14005 Amazon: https://music.amazon.com/podcasts/21449d46-936b-443d-8a10-012402c9dff6 iHeart Radio: https://www.iheart.com/podcast/1323-aging-less-the-longevity-231093338/ Podbean: https://longevityscienceinsights.podbean.com/ PlayerFM: https://player.fm/series/aging-less-the-longevity-science-insights-podcast Podchaser: https://www.podchaser.com/podcasts/aging-less-the-longevity-scien-5871404