Turns out those vitamins you've been diligently taking may not do a darn thing to prevent common killers like heart disease or cancer, a new study shows.
An analysis of the studies that have been done on the subject found clear evidence that vitamins in "fruits, vegetables, whole grains, fat-free and low-fat dairy products, and seafood may play a role in the prevention of cancer or cardiovascular disease," researchers wrote in the Annals of Internal Medicine . But vitamin supplements? Not so much.
There was "no consistent evidence that the included supplements affected [cardio vascular disease], cancer, or all-cause mortality in healthy individuals without known nutritional deficiencies," the team from Kaiser Permanente Center for Health Research in Portland, Ore.concluded.Vitamins also may encourage people to take health risks like smoking. Taking the vitamins can make people feel invulnerable, The Guardian reports.