How Much Vitamin D Should You Take?

The safe dose of vitamin D supplements to get most of the population to the optimal level is 2,000 i.u. a day, but the elderly and overweight may need more.

If you missed the first two videos in this series, see:

And I wrap up with:

Image Credit: Peter Rosbjerg via flickr.

[gloryb-tv]

Very interesting! I've been enrolled in a vitamin D study for a while. My blood is tested twice a year. Through that I was able to tweak the supplements I take. I'm now taking 5000 IU gels 4 times a week.
My doctor once added a vitamin D test to regular blood work and it was taken within days of my semi-annual D test. The results of both tests were close.
I've been aiming to get my numbers between 50 and 60.

[PatrickHocking]

Hi, one other thing that hasn't been considered. Doesn't Vit D get stored in the liver. Wouldn't a weekly dose be sufficient?

[yawnaisian]

What's the optimal timing for D and B12?

[mblegend]

Dr. Alejandro Diaz of Philippine Neurological Association recommends a daily Vitamin D intake of 600 IU for persons ages 1 to 70 years old and 800 IU for 71 years old and up. Anything less can put one at risk of severe bone degradation and other organ-related complications.

[harry_bonkers]

Game of Thrones season 6 finished.... thankfully now we have Dr. Greger's Vitamin D series to watch :D haha
Maybe open the next video intro with GoT theme song :p

[MoreChannelNoise]

if blood test results are so unreliable then how can you take any notice of the research which also tested blood levels? wrongly?

[onepunchvegan]

Too much Vitamin D clifhangers, Dr. Greger. ;)

[frankenz]

I take 5000 I.U. D-3 daily. I get sunlight exposure, and also eat things that are supposed to be somewhat rich in the vitamin, and yet I score 45-47 on my tests for it for over a year now. That 1 time 50, 000 D-2 yielded no real progress. So I switched to D-3 over the counter.

[peterfong]

Blessed love to all, is this cod liver oil ?? Watching from Jamaica west Indies !!

[Basaltq]

There's two big longitudinal studies being done in Finland and USA with different groups getting different amounts of D-vitamin and we will get results next year. Those should give us final answer about D-vitamin supplements.

[zennologyofeverything]

I read everywhere that one should take vitamind D3 with magnesium and k2 vitamin. This, in order to make vitamin work better.

* Why is this not mentioned by dr. Greger?

* Are the other vitamins not necessary in order to make vitamin D work better?

Thank you in advance.

Greetings

[jasminerosebellydancer]

What form is best the oil or capsule 💊

[varunnrao]

Doctor you recommend 2000 IU. Is a healthy individual taking 5000 IU per day too big a risk?

[ipwnukazu]

so on sunny days no supplements and in winter 2000iu?

[seattledutch]

I needed to take 5000 IU to get it up, and it’s still a slow improvement. Will stay on 5000 IU for a while. I have long COVID.

[CoryBrian]

Is vitamin D3 from lichen a secure source?

[BlueSkies]

We have to go over vitamins 1 by 1. And I would like to know about BCAA (to avoid the muscle muscle loss with ageing (sarcopenia)). How much of BCAA daily? And what is the limit for vitamin A. It sneaks in everywhere, we hit toxicity levels fast.

[SamGriffithsx]

What about puffed grains? Are the healthy or not??

[houndjog]

Jeff T. Bowles wrote an excellent book "The Miraculous Results of Extremely High Doses of Vitamin D3" . It is his experiment with HUGE DOSES of D3 from 25, 000 to 50, 000 to 100, 000 IU a day over a year period!.

[PadawanLearner]

Dr G would you be so kind as to expand on non celiac guten sensitivity please as it's looking most probable that a good chunk of the population has some kind of issue with grains (me included👎).
A Dr Peter Osborne appears to be leading the way with this but the wisdom conflicts as he recommends a paleo style of eating (animals)👎 plus he sells many potions and powders mmmm. The science behind what he says about grains does appear sound though.
Many thanks