Uploaded May 2026 | Updated September 2026, 1 week ago
Before watching the video, can you guess which conditions vitamin D has actually been proven to work for in randomized, double-blind, placebo-controlled trials?
The general heart disease video I mentioned is How Not to Die from Heart Disease (nutritionfacts.org/video/how-not-to-die-from-heart-disease/).
I have many more videos on vitamin D supplements, including:
• How Much Vitamin D Should You Take? (nutritionfacts.org/video/how-much-vitamin-d-should-you-take/)
• The Optimal Dose of Vitamin D Based on Natural Levels (nutritionfacts.org/video/the-optimal-dose-of-vitamin-d-based-on-natural-levels/)
• The Best Way to Get Vitamin D: Sun, Supplements, or Salons? (nutritionfacts.org/video/the-best-way-to-get-vitamin-d-sun-supplements-or-salons/)
• The Risks and Benefits of Sensible Sun Exposure (nutritionfacts.org/video/the-risks-and-benefits-of-sensible-sun-exposure/)
• Should Vitamin D Supplements Be Taken to Prevent Falls in the Elderly? (nutritionfacts.org/video/should-vitamin-d-supplements-be-taken-to-prevent-falls/)
• Do Vitamin D Supplements Help Prevent Diabetes, Cancer Mortality, and Overall Mortality? (nutritionfacts.org/video/do-vitamin-d-supplements-help-prevent-diabetes-cancer-mortality-and-overall-mortality/)
New subscribers to our e-newsletter always receive a free gift. Get yours here: nutritionfacts.org/subscribe/.
Have a question about this video? Leave it in the comment section at nutritionfacts.org/video/friday-favorites-vitamin-d-supplements-tested-for-copd-heart-disease-depression-obesity-and-cancer-survival and someone on the NutritionFacts.org team will try to answer it.
Want to get a list of links to all the scientific sources used in this video? Click on Sources Cited at nutritionfacts.org/video/friday-favorites-vitamin-d-supplements-tested-for-copd-heart-disease-depression-obesity-and-cancer-survival. You’ll also find a transcript and acknowledgements for the video, my blog and speaking tour schedule, and an easy way to search (by translated language even) through our videos spanning more than 2,000 health topics.
Thanks for watching. I hope you’ll join in the evidence-based nutrition revolution!
-Michael Greger, MD FACLM
Captions for this video are available in several languages; you can find yours in the video settings. View important information about our translated resources: nutritionfacts.org/translations-info
NutritionFacts.org
• Subscribe: nutritionfacts.org/subscribe
• Donate: nutritionfacts.org/donate
• Podcast : nutritionfacts.org/audio
• Books: nutritionfacts.org/books
• Shop: drgreger.org
• Facebook: facebook.com/NutritionFacts.org
• Twitter: twitter.com/nutrition_facts
• Instagram: instagram.com/nutrition_facts_org
Before watching the video, can you guess which conditions vitamin D has actually been proven to work for in randomized, double-blind, placebo-controlled trials?
The general heart disease video I mentioned is How Not to Die from Heart Disease (nutritionfacts.org/video/how-not-to-die-from-heart-disease/).
I have many more videos on vitamin D supplements, including:
• How Much Vitamin D Should You Take? (nutritionfacts.org/video/how-much-vitamin-d-should-you-take/)
• The Optimal Dose of Vitamin D Based on Natural Levels (nutritionfacts.org/video/the-optimal-dose-of-vitamin-d-based-on-natural-levels/)
• The Best Way to Get Vitamin D: Sun, Supplements, or Salons? (nutritionfacts.org/video/the-best-way-to-get-vitamin-d-sun-supplements-or-salons/)
• The Risks and Benefits of Sensible Sun Exposure (nutritionfacts.org/video/the-risks-and-benefits-of-sensible-sun-exposure/)
• Should Vitamin D Supplements Be Taken to Prevent Falls in the Elderly? (nutritionfacts.org/video/should-vitamin-d-supplements-be-taken-to-prevent-falls/)
• Do Vitamin D Supplements Help Prevent Diabetes, Cancer Mortality, and Overall Mortality? (nutritionfacts.org/video/do-vitamin-d-supplements-help-prevent-diabetes-cancer-mortality-and-overall-mortality/)
New subscribers to our e-newsletter always receive a free gift. Get yours here: nutritionfacts.org/subscribe/.
Have a question about this video? Leave it in the comment section at nutritionfacts.org/video/friday-favorites-vitamin-d-supplements-tested-for-copd-heart-disease-depression-obesity-and-cancer-survival and someone on the NutritionFacts.org team will try to answer it.
Want to get a list of links to all the scientific sources used in this video? Click on Sources Cited at nutritionfacts.org/video/friday-favorites-vitamin-d-supplements-tested-for-copd-heart-disease-depression-obesity-and-cancer-survival. You’ll also find a transcript and acknowledgements for the video, my blog and speaking tour schedule, and an easy way to search (by translated language even) through our videos spanning more than 2,000 health topics.
Thanks for watching. I hope you’ll join in the evidence-based nutrition revolution!
-Michael Greger, MD FACLM
Captions for this video are available in several languages; you can find yours in the video settings. View important information about our translated resources: nutritionfacts.org/translations-info
NutritionFacts.org
• Subscribe: nutritionfacts.org/subscribe
• Donate: nutritionfacts.org/donate
• Podcast : nutritionfacts.org/audio
• Books: nutritionfacts.org/books
• Shop: drgreger.org
• Facebook: facebook.com/NutritionFacts.org
• Twitter: twitter.com/nutrition_facts
• Instagram: instagram.com/nutrition_facts_org
