I posted a few months ago about the new research showing beneficial effects of Vitamin D. News out today reinforcing that:
"Prof Cedric Garland, from the University of California in San Diego, and colleagues looked for published research papers since 1966 and 2004 about cancer and vitamin D.
They included 30 investigations of colon cancer, 13 of breast cancer, 26 of prostate cancer and seven of ovarian cancer. Prof Garland said: "A preponderance of evidence, from the best observational studies the medical world has to offer, gathered over 25 years, has led to the conclusion that public health action is needed."
The research suggest 1000 I.U. as considered optimal. If you are using AOR's Essential Mix or its big-brother Ortho-Core (currently sold out), you are are in good shape as they contain 1000 I.U. of Vitamin D.
Get some sun too, and make your own!