The benefits of Vitamin D supplements: randomized interventional trials are necessary to establish cause-and-effect.
My other recent video on vitamin D is Vitamin D Supplements Tested for COPD, Heart Disease, Depression, Obesity, and Cancer Survival (
Our Optimum Nutrient Recommendations page ( has more information on vitamin D supplementation.
You may also be interested in these videos on the topic:
• The Optimal Dose of Vitamin D Based on Natural Levels (
• The Best Way to Get Vitamin D: Sun, Supplements, or Salons? (
• The Risks and Benefits of Sensible Sun Exposure (
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-Michael Greger, MD FACLM
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For all of our videos on vitamin D, visit https://nutritionfacts.org/topics/vitamin-d-supplements/
Just get yourself tested at ulta lab – cheap enough
Stop recommending vitamin D3. Vitamin D3 contains exactly the same ingredient that is in RAT POISON.
All these studies you mention used totally insufficient amounts of Vitamin D to see the true benefits. Studies suggest that exposing arms and legs (about 25% of body surface) to midday summer sun for 10–30 minutes can generate anywhere from 10,000 to 25,000 IU of vitamin D in light-skinned individuals. Darker skin may take 3–10× longer for similar production. That being the case, why in the world would any study look at 2000 IU as a supplement? Just as stupid is supplementing in order to reach a pre-defined level of D in the body, when the levels used on based on preventing rickets and not on preventing cancer.
I never knew I would ever get cured from hsv2 until I came across Dr Osade on YouTube who helped me with the treatment to get rid of the virus thank you Dr Osade for your help and support.
If your young get out in the sun 🌞 if your old take vitamin d and be bold! 😎
Of course vitamin d helps! Especially if your older!
So, my insurance no longer covers the vitamin D test and the only vitD I can get a prescription for is the megadose of D2. I need to take things in my hands, clearly
Have you looked at this study? Veugelers PJ, Ekwaru JP. A statistical error in the estimation of the recommended dietary allowance for vitamin D. Nutrients. 2014 Oct 20
This video provides a balanced overview of recent research on vitamin D supplementation. While it may not significantly reduce overall mortality or cancer incidence, studies suggest a modest 13% decrease in cancer mortality3. The benefits appear more pronounced for normal-weight individuals, with obese people potentially requiring higher doses3. However, the overall impact on health outcomes remains limited and requires further research.
2000 IUs
not enough to
see the benefits
1:23 Just want to point out that one of the authors is called Donald Trump
Taking daily 2000 D3.
Thank you for the vid.
Do you think Omega 3 trials would get different results if they were vegan (not fish oil)?
Vitamin D3 along with vitamin K2.
Does supplementing with VitD3 increase calcium levels in the blood and pose a risk for heart attack?
Yes, of course.
Vitamin d stores in your body for months.. you don't need it everyday it's not even sunny everyday lol shocking that dr greger would put out such a stupid video, its a worry, i thoight he was trustworthy
I’ve raised my D and my girlfriend couldn’t be happier, it works! 🙌
My question is who did the math and the studies?
But isn’t there a difference in the dosage of vitamin D3 depending on the time of year?
Super interesting! Thank you so much for sharing <3
What about vitamin D from wild mushrooms ?
I love this channel!
I just get out in sun or clouds as Vitamin D comes from the sun. It can still reach you on cloudy days.
I'd rather have it from UV bathed mushrooms, would love a video about UV lighting effect on Vitamin D content of different shrooms