The Latest Research on Auto-Immune Disease an...

876. There's no vitamin F or G. After E, we jump straight to K, and that quirk is a hint that this nutrient is more complicated than it looks. Vitamin K isn't one thing. It's a whole family of compounds -- K1, K2, MK-4, MK-7 -- that come from different sources and do completely d ...  Show more

On a road trip, tackling a summer cleanup, or just catching up on podcasts? QDT has you covered with Summer Saturday encores from your favorite shows. See the full Summer Saturday lineup on Spotify and enjoy this episode, which first aired in November 2025.838. Are manufacturers ...  Show more

A JAMA Clinical Guidelines Synopsis summarizes the Endocrine Society's most recent recommendations on vitamin D supplementation for disease prevention. Author Sherri-Ann M. Burnett-Bowie, MD, MPH, discusses this and more with JAMA Associate Editor David L. Simel, MD, MHS.

What's the story with vitamin D and COVID-19? Is there a link and could vitamin D supplements help? 

Discover all of the podcasts in our network, search for specific episodes, get the Optimal Living Daily workbook, and learn more at: OLDPodcast.com. Episode 2716: Aging comes with unique nutritional challenges, especially for plant-based eaters like Debra and her husband. As nutr ...  Show more

During the winter months, here in the UK, days are short and there isn’t enough sunlight for most of us to make the Vitamin D we need. Taking a tiny Vitamin D supplement is a minute change that could have a huge impact on our health. Professor David Llewellyn from Exeter Universi ...  Show more