http://www.smartplanet.com/business/blog/smart-takes/vitamin-d-its-a-linchpin-to-your-immune-system/4835 offers more proof that Vitamin D is an essential booster for health. It shows Stockholm researchers proved Vitamin D is required so that the T cells of your immune system can do their job.
Many folks don't get enough Vitamin D, for other research revealed Vitamin D amounts in milk and other foods is not enough to do the job.
Vitamin D3, the form best metabolized, is $17 for a 300 cap/2,000mg bottle at Costco; very, very cheap prevention against heart attack, diabetes, colon and breast cancer. Please make sure to show this article to your friends, as this is the best and most effective cancer preventative known.