Study: Multivitamins may lower cancer risk in men

http://www.sfgate.com/news/medical/article/Study-Multivitamins-may-lower-cancer-risk-in-men-3956422.php

America's favorite dietary supplements, multivitamins, modestly lowered the risk for cancer in healthy male doctors who took them for more than a decade, the first large study to test these pills has found.

The result is a surprise because many studies of individual vitamins have found they don't help prevent chronic diseases and some even seemed to raise the risk of cancer.

In the new study, multivitamins cut the chance of developing cancer by 8 percent. That is less effective than a good diet, exercise and not smoking, each of which can lower cancer risk by 20 percent to 30 percent, cancer experts say.