DEAR DOCTOR K: I had a heart attack several years ago. I have been taking low-dose aspirin ever since to prevent a second one. Do I need to worry about bleeding risks?
DEAR READER: Every medicine contains risks as well as benefits. The question with any medicine is: Do the benefits outweigh the risks? Aspirin helps prevent repeat heart attacks in two ways. A heart attack occurs when the flow of blood through one of the heart's arteries is blocked.