60 to 80% of cases of chronic degenerative disease are preventable

Three randomised clinical trials to consider showing considerable improvement in risk profiles for chronic degenerative disease (heart disease, stroke, cancer, type 2 diabetes):

Vitamin E in the Primary Prevention of Cardiovascular Disease and Cancer, Lee et al, Journal of the American Medical Association, 2005;294:56-65.

Effect of Selenium and Vitamin E on Risk of Prostate Cancer and Other Cancers, Clarke et al, Journal of the American Medical Association, 2009;301(1):39-51.

Calcium plus Vitamin D Supplementation and the Risk of Fractures, Jackson et al, N Engl J Med 2006;354:669-683.