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Daniel E.

daniel@psychlinks.ca
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Aspirin 'only for heart patients'
BBC News
November 3, 2009

The use of aspirin to ward off heart attacks and strokes in those who do not have obvious cardiovascular disease should be abandoned, researchers say.

The Drugs and Therapeutics Bulletin (DTB) study says aspirin can cause serious internal bleeding and does not prevent cardiovascular disease deaths.

It says doctors should review all patients currently taking the drug for prevention of heart disease.

The Royal College of GPs says it supports the DTB's recommendations.

Low-dose aspirin is widely used to prevent further episodes of cardiovascular disease in people who have already had problems such as a heart attack or stroke.

This approach -- known as secondary prevention -- is well-established and has confirmed benefits.

But many thousands of people in the UK are believed to be taking aspirin as a protective measure before they have any heart symptoms.

Controlled trials
Between 2005 and 2008, the DTB said four sets of guidelines were published recommending aspirin for the "primary prevention" of cardiovascular disease - in patients who had shown no sign of the disease.

These included people aged 50 and older with type 2 diabetes and those with high blood pressure.

But the DTB said a recent analysis of six controlled trials involving a total of 95,000 patients published in the journal the Lancet does not back up the routine use of aspirin in these patients because of the risk of serious gastrointestinal bleeds and the negligible impact it has on curbing death rates.

Dr Ike Ikeanacho, editor of the DTB, said: "Current evidence for primary prevention suggests the benefits and harms of aspirin in this setting may be more finely balanced than previously thought, even in individuals estimated to be at high risk of experiencing cardiovascular events, including those with diabetes or elevated blood pressure."

'Sensible statement'
Professor Steve Field, chairman of the Royal College of General Practitioners, said the DTB was an excellent source of independent advice for medical professionals.

He said: "Given the evidence, the DTB's statement on aspirin prescription is a sensible one.

"The Royal College of General Practitioners would support their call for existing guidelines on aspirin prescription to be amended, and for a review of patients currently taking aspirin for prevention."

June Davison, senior cardiac nurse at the British Heart Foundation said: "It is well established that aspirin can help prevent heart attacks and strokes among people with heart and circulatory disease - so this group of people should continue to take aspirin as prescribed by their doctor.

"However, for those who do not have heart and circulatory disease the risk of serious bleeding outweighs the potential preventative benefits of taking aspirin.

"We advise people not to take aspirin daily, unless they check with their doctor.

"The best way to reduce your risk of developing this disease is to avoid smoking, eat a diet low in saturated fat and rich in fruit and vegetables and take regular physical activity."
 

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Aspirin A Day -> Is It For You?

Harvard Medical School: Healthbeat
March 16, 2010
Should everyone take an aspirin a day?

If you are having a heart attack, chewing a full-strength aspirin tablet can be a lifesaving move. If you have heart disease, have had a heart attack or stroke, or are at very high risk for having one, taking a low-dose aspirin every day is part of a proven strategy for preventing one of these life-changers. Aspirin makes blood platelets less ?sticky.? This limits the formation of clots in the bloodstream, which can trigger heart attacks and strokes. But what if you are relatively healthy? Will taking aspirin help you keep heart attack, stroke, and other forms of cardiovascular disease at bay?

If taking aspirin were without side-effects and completely risk free, it might make sense for everyone with heart disease, or just worried about it, to take it. But aspirin does have risks. Reducing blood?s clotting potential can lead to hemorrhagic stroke (bleeding inside the brain). In the stomach, aspirin can cause everything from a feeling of mild heartburn to bleeding ulcers. Severe gastrointestinal bleeding can be deadly.

The benefit-risk balance
It?s the balance of benefits and risks that guides who should take aspirin for primary prevention ? preventing heart attack, stroke, or another manifestation of cardiovascular disease in seemingly healthy people.

Researchers from six large primary prevention trials of aspirin pooled their data and analyzed them as if they were from a single large trial. It?s a legitimate technique called meta-analysis. In this relatively healthy group of 95,000 volunteers, the reduction in heart attacks and strokes in people taking aspirin was almost counterbalanced by major bleeding in the gastrointestinal system and the brain. The researchers concluded that for individuals without previously diagnosed cardiovascular disease, ?aspirin is of uncertain net value.?

Another meta-analysis showed only a modest overall benefit, if any, for aspirin among people with diabetes but no cardiovascular disease, and it had little impact on heart attack or stroke. When the researchers analyzed the data by sex, aspirin reduced the risk of heart attack in men but not women.

The British journal Drug and Therapeutic Bulletin also weighed in on the topic in November 2009. After reviewing and analyzing information from relevant primary prevention studies, the journal?s editors concluded that the benefits and harms ?may be more finely balanced than previously thought,? and aspirin should not be recommended as an across-the-board option to help healthy people prevent heart attack and stroke.

Finding the tipping point
Don?t take aspirin just because you?ve heard it can help prevent a heart attack or stroke. It can , but it can also do some damage. There?s no exact tipping point at which it makes sense to start taking an aspirin a day. If you are healthy, haven?t been diagnosed with heart disease or other cardiovascular disease, and don?t have risk factors for them, aspirin probably isn?t for you. You?ll reap little benefit while exposing yourself to side effects you?d rather stay away from. The less healthy your heart and arteries, the more likely the advantages of taking aspirin will outweigh any risks.

It isn?t the easiest decision to make. If you are in the gray zone, talking with your doctor could make it more black and white.

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