What's the difference between vitamins D1, D2, D3 etc. ?

Question

I'm studying which supplements would be best for me, but I have a case where I get no info about which D is included and a case where only one of those is.

Can a body change one vitamin D to any other or can it function on it's best with just one of them?

Or am I to get those other Ds by dietary intake/sunlight exposure (I'm not keen on exposing myself to sunlight intentionaly, though, but I might consider it if I coudln't balance my nutrition any other way, of course.) in case I don't find favorable supplements?

Thank you.

Answer 1

Try this link : http://wikipedia.org/wiki/Vitamin_D

It has good references.

Good Luck !