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Heart Disease Health Center

Aspirin: Low-Dose Gets High Marks for Heart Attack Prevention

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Jan. 11, 2001 -- Taking as little as one baby aspirin a day can help ward off heart attacks in people at high risk for one, according to new research. The Italian investigators also looked to see what benefits vitamin E had on the heart -- and didn't find any.

While the jury is still out on vitamin E, experts tell WebMD that people concerned about heart disease should discuss taking aspirin with their physician.

A heart attack occurs when the heart muscle is damaged because its blood supply is cut off. This can be due to a blood clot blocking one of the heart's blood vessels or by a narrowing of these vessels, called atherosclerosis. According to 1997 statistics from the American Heart Association, more than 1 million new or recurrent cases of heart attack take place each year in the U.S. -- and more than 40% of victims die. One in every five deaths in the U.S. is caused by heart disease.

Because of its anticlotting properties, aspirin is sometimes used to prevent subsequent heart attacks in people who already have had one or in people who are otherwise at risk. Doctors are careful how much aspirin they recommend, however, as an infrequent but important side effect of taking aspirin is excessive bleeding that could lead to a stroke.

Vitamin E also has been used to ward off heart attacks. The theory is that vitamin E's antioxidant effects counteract the damage done when oxygen breaks down in the body -- thus helping to prevent the harm to blood vessels caused by atherosclerosis.

'"This research doesn't present anything terribly new, but it really clarifies areas that have been fuzzy in the past," says Walter W. Rosser, who wrote an editorial commentary on the study, both of which are published in this week's issue of the British medical journal The Lancet.

The study confirms that you should take a low-dose, rather than a high-dose aspirin tablet, Rosser tells WebMD. "You only need one 80-100 mg [tablet] a day," he says.

The study also tells us that people over age 50 with risk factors for heart disease are the ones who should take aspirin as a preventive therapy.

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