How Much Vitamin D Do You Really Need?

Joseph Mercola reports:

On November 3 at the University of Toronto, Ontario, Canada, noted doctors Cedric Garland and Tracey O'Connor are running a seminar on how vitamin D can be used to prevent breast cancer – as well as infectious diseases, type 1 diabetes, hypertension, colon cancer, and falls in the elderly.

Presenters will include some of the best-known vitamin D researchers/practitioners, such as Robert P. Heaney, Reinhold Vieth, John White and Susan Whiting.

It is estimated that 25 to 50 percent of any healthcare budget could be saved with adequate vitamin D serum levels.