[bmh100]

Vitamin D is extremely important, affecting many areas of life. People don't realize how important until they become extremely deficient.

[legulere]

The question is wether it’s Vitamin D3 itself. Vitamin D3 is strongly correlated to sunlight exposure, which again is correlated to lots of other things.

[cogman10]

Yeah... As someone with a family history of skin cancer sort of sucks that our source of D3 also comes with cancer production.

[Out_of_Characte]

That sucks. Though skin, the tissue, is the biggest cancer risk in most humans anyway. so with most cancer and longevity reseach being focused on that there might be improvement and treatments on the way somewhere in the future.

[nradov]

One of those other things is nitric oxide, which is important in regulating blood pressure.

[bawolff]

Well there are definitely some things where its causation not correlation (e.g. Rickets).

[chrisco255]

Why are there not at-home tests for various vitamin levels? Is that something that would be difficult to do? Seems like it would be a huge benefit for personal health.

[HPsquared]

Several companies offer inexpensive home blood test kits for various things including vitamin D, cholesterol, etc.