Men who took vitamin E or vitamin C supplements were no more or less likely to develop cancer than men given a placebo, indicating these antioxidants have no cancer-prevention value, U.S. researchers said on Sunday.
Previous research showed that people with diets rich in vitamins E and C had a lower risk of cancer, suggesting that supplements of these vitamins might help ward off cancer, the researchers said.
The new study tracked cancer risk in 14,641 male U.S. doctors who took either 400 IU of vitamin E every other day or a placebo, or 500 milligrams of vitamin C daily or a placebo. Their average age was 64 at the start of the study, and they were followed for eight years on average.(Read entire article)
Vitamin C or E pills do not help prevent cancer in men, concludes the same big study that last week found these supplements ineffective for warding off heart disease.
The public has been whipsawed by good and bad news about vitamins, much of it from test-tube or animal studies and hyped manufacturer claims. Even when researchers compare people's diets and find that a vitamin seems to help, the benefit may not translate when that nutrient is obtained a different way, such as a pill.
"Antioxidants, which include vitamin C and vitamin E, have been shown as a group to have potential benefit," but have not been tested individually for a long enough time to know, said Howard Sesso of Harvard-affiliated Brigham and Women's Hospital in Boston.(Read entire article)