MattB wrote:Speaking only from personal experience I don't think MS is caused by a vitamin D deficit--or at the very least it's only one of many different possible causes. I grew up drinking lots of milk which, at least in the US, has a reasonable amount of Vit D added PLUS I spent almost all of my time outside yet I still have MS. I honestly feel that I grew up in a very nutritionally and physically desirable environment. The only thing that made my childhood rough was multiple family members whom I was very close to passing away over the span of 3 years, I know I'm still emotionally scarred from that.
I'm more of the school that it's either a genetic defect of some kind, set off by a virus/bacteria, or exposure to some type of chemical or microbial. Just my two cents if it's even worth that much.
I don't think it is as simple as that Matt.
For the mostpart, MS = genetic susceptibility+causal factors+deficiency in protective factors. Milk proteins have been shown to be causal, the vitamin D content of milk is much too low to be immunoregulatory and many parts of the US have lengthy vitamin D winters.
A viral and or bacterial trigger is plausible to initiate the disease process but MS is characterised by repeated immune actions against self over prolong periods. Chronic antigen exposure from a viral/bacterial presence over decades is difficult to justify for the majority of people with MS whereas dietary proteins can easily fit this motif.