I've been reading up a lot on vitamin D deficiency and it would appear that a huge percentage of people in the northern hemisphere are vitamin D deficient. This is because the sun is only strong...
Type: Posts; User: dostoyevsky; Keyword(s):
I've been reading up a lot on vitamin D deficiency and it would appear that a huge percentage of people in the northern hemisphere are vitamin D deficient. This is because the sun is only strong...