(AP) — New studies find most people won’t benefit from taking daily low-dose aspirin or fish oil supplements to prevent a first heart attack or stroke.

Aspirin is recommended now for lowering the risk of a second heart attack, stroke or other heart problem in people who already have suffered one. The new research does not change that advice.

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Instead, it tested whether aspirin also could prevent a first heart attack or stroke in people with diabetes or with several other health threats such as smoking, high cholesterol and high blood pressure.

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In those cases, aspirin’s benefits did not outweigh the risk of serious bleeding it can cause.

Results were discussed Sunday at the European Society of Cardiology meeting in Munich.

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