My doctor added vitamin D test to his patients recurring blood work since the start of COVID, and found out just about all his patients was deficient or near it.
If you don't have a primarily fish based diet or spend hours under direct overhead sunlight every day without a shirt on, you're probably deficient as well.
That's a bit of an exaggeration, Vitamin D does not require hours in the sun:
> Recommendations to Obtain Adequate Amount of Vitamin D.
> Sun exposure to the face, arms, hands, and legs without sunscreen for 5 to 30 minutes at least twice a week or more between the hours of 10 am and 4 pm
Now that's for most people: if you live in Alaska then during the winter maybe you need a litle more or something ... but the point is most people just need a little sun, < 30 minutes twice a week.
I'll say track and test yourself, since it depends highly on skin tone and weather.
That study also claims 12-20ng/mL 25-hydroxyvitamin D is sufficient. My doctor says the post-COVID studies suggest 75ng/mL is closer to optimal, and <30ng/mL had been considered deficient for about a decade before COVID.
Personally I had no problem hitting 20ng/mL through sunlight alone and I'm pretty fair skinned but live somewhere sunny. But I haven't been able to get anywhere near 75ng/mL even when I've made an effort to increase vitamin D through supplements and exposure to the sun.
ThouYS · · focus · HN ↗
BugsJustFindMe · · focus · HN ↗
This is vague and doesn't explain anything. Can you share any references that communicate what you're thinking about?
nkozyra · · focus · HN ↗
It became something of a panacea nutrient, recently around COVID.
1. <a href="https://en.wikipedia.org/wiki/Vitamin_D_toxicity" rel="nofollow">https://en.wikipedia.org/wiki/Vitamin_D_toxicity
kenhwang · · focus · HN ↗
If you don't have a primarily fish based diet or spend hours under direct overhead sunlight every day without a shirt on, you're probably deficient as well.
hungryhobbit · · focus · HN ↗
> Recommendations to Obtain Adequate Amount of Vitamin D.
> Sun exposure to the face, arms, hands, and legs without sunscreen for 5 to 30 minutes at least twice a week or more between the hours of 10 am and 4 pm
Source: <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC8299926/" rel="nofollow">https://pmc.ncbi.nlm.nih.gov/articles/PMC8299926/
Now that's for most people: if you live in Alaska then during the winter maybe you need a litle more or something ... but the point is most people just need a little sun, < 30 minutes twice a week.
kenhwang · · focus · HN ↗
That study also claims 12-20ng/mL 25-hydroxyvitamin D is sufficient. My doctor says the post-COVID studies suggest 75ng/mL is closer to optimal, and <30ng/mL had been considered deficient for about a decade before COVID.
Personally I had no problem hitting 20ng/mL through sunlight alone and I'm pretty fair skinned but live somewhere sunny. But I haven't been able to get anywhere near 75ng/mL even when I've made an effort to increase vitamin D through supplements and exposure to the sun.
srveale · · focus · HN ↗
In Calgary, it's almost half the year that you basically cannot rely on the sun at all for vitamin D.
red-iron-pine · · focus · HN ↗
basically any patient he did blood work on, that was an office worker, was moderately or seriously deficient.