[_0w8t]

Are there any statistics that low levels of D at northern latitudes decreases life span? Without such decrease even if it will be confirmed that low D causes cancer, it will also imply that higher levels of D causes other problems that just as deadly as cancer.

[cellularmitosis]

One example (mentioned elsewhere in this thread) is that incidence of autoimmune disorders goes up as you get farther away from the equator

Edit: I suppose that’s decreased health span more than decreased life span

[_0w8t]

As D suppresses immune system among many other things one should not be surprised to have such correlation with incidents of autoimmune disorders. On the other hand life span in Canada is few years longer than in US while I got impression that levels of D deficiency is comparable in US and Canada. So I guess it is very open question if low D is really bad.