A large clinical trial of almost 15,000 male doctors taking vitamins E and C for up to 10 years has found that neither supplement had any effect on cancer rates, including cancer of the prostate.This new study comes on the heels of a disappointing finding regarding vitamin E reported late last month. After following 35,000 men taking selenium and vitamin E, investigators halted their trial because no benefit was seen and in some supplement users there appeared to be a slight increase in the risk of cancer or diabetes.
An author of the current study, an abstract of which was presented on Monday at the American Association for Cancer Research meeting in Washington, D.C., said his trial found neither risk nor benefit to use of the vitamins.
