The " sun-shine" vitamin (my favorite name for it) or vitamin D is having new functions attached to it. For the longest time, it was thought that vitamin D only played a role in bone health, as nothing more than a "help-meet" if you will for calcium and phosphorus. Now-a-days, its role in various biological functions is becoming more apparent.
As a side note, you would think that we would regard this vitamin higher since our body has very many vitamin D receptors. But, we often find ourselves making the important things smaller than they really are.
Anyway, two articles on sciencedaily.com pointed two the importance of vitamin D. One article relays how vitamin D can help prevent type I diabetes.
This next article, however, really speaks to an important issue: how seemingly healthy children can really be vitamin D deficient. It is some common today for people to think if you look healthy, well, then you are healthy. That is not always the case.
All in all, we need to get over this fear of the environment. "The sun will Kill you! The sun will KILL YOU!" that is the mantra of modern medicine. They say you need sun block to protect you from the sun and skin cancer, but those sunscreens probably cause cancer. Just get appropriate amounts of sun exposure (about fifteen minutes per day for lighter toned people; people of darker complexions need more time) and take plenty of raw milk and vitamin D!