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Aspirin Can Help Prevent Heart Attacks, Stroke -- But It's Not for Everyone

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June 29, 2000 -- Ever since news broke that a simple over-the-counter tablet might help reduce heart disease, millions of Americans have been popping aspirin along with their morning vitamins in the hope of preventing a heart attack or stroke.

Now, British researchers have found that not everyone should be taking aspirin. In fact, for some, it can be harmful. Their study appears in the July issue of the British Medical Journal.

"Aspirin is an amazing drug that has a vital and conclusive part to play in reducing the risk of heart attack or stroke," says Belinda Linden, medical spokeswoman for the British Heart Foundation (BHF), which helped fund the study. "In this study, people who already had high blood pressure did not have any particular benefit," she tells WebMD. "In fact, they may have increased risk of bleeding." Linden is cardiac nurse adviser and head of medical information with the BHF in London.

This particular study looked at the protective factor of taking a daily, low-dose (75 mg) aspirin tablet in more than 5,000 men aged 45 to 69 who were at increased risk of heart disease. Researchers found that for this group without verified heart disease, overall risk of heart attack and stroke was cut by 20% after taking low-dose aspirin. But men with higher blood pressures were found to derive no protective benefit, Linden says.

"These study results give us an opportunity to say to people that chronic heart disease is internationally one of the biggest killer diseases, and there are many things that we all can do to reduce our own risk," says Paul Fawcett, spokesman for the BHF. "If people are thinking about that, that's a good thing. But if they're thinking that all they have to do is take an aspirin, then maybe they need to think again." Lifestyle, he tells WebMD, " has a very big impact."

The American Heart Association (AHA) recently developed recommendations for using aspirin in the primary prevention of heart disease. Among them:

  • An intensive program should be started to modify risk factors that include smoking, high blood pressure, high cholesterol, physical inactivity, obesity, and diabetes.
  • The decision to take aspirin should be made only after consulting with your physician.
  • Anyone starting a regular aspirin regime should be aware that the medication does have side effects.

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