Are you one of the 40 million Americans who take a low-dose aspirin every day (or every other day) to prevent a heart attack or stroke?

Who gave you that idea? Your spouse, a friend, or maybe a TV or magazine ad telling you that aspirin protects your heart by "keeping your blood flowing freely?"

If it wasn't your doctor, and you're a generally healthy person who is taking aspirin because you hope it will keep a heart attack or stroke at bay, you should probably stop.