How does aspirin help during a heart attack?
Aspirin helps in thinning blood, which is why it is useful during a heart attack. After a heart attack, aspirin can also help prevent a subsequent attack since it keeps blood from clotting within the arteries. It is encouraged that people at high risk of getting heart attacks should take low levels of aspirin on a daily basis, according to the American Heart Association.
Sources: webmd.com, heart.org