Heart Health
Resistant to aspirin?
Ask the doctor
I recently started taking low-dose aspirin, per my doctor's advice. But I heard that for some people, aspirin doesn't help prevent heart attacks. Is this true, and is there any way to find out if I'm one of those people?Here's why. Blood clots are the root cause of heart attacks and most strokes. Aspirin reduces the risk of these dangerous clots by preventing tiny cell fragments in the blood called platelets from clumping together and forming clots. But aspirin's effects may vary from person to person. In about one in 100 people, aspirin's anti-clotting powers are weaker than expected, some research suggests.
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