If you have a heart-zapping defibrillator implanted in your chest but now are dying of something else, when do you have it turned off? Read more »

Doctors are reporting an exciting win for gene testing and personalized medicine: Checking patients' DNA before starting them on a popular blood thinner helps get the tricky dose right and keep them out of the hospital. Read more »

A year after kicking the habit, smokers' arteries showed signs of reversing a problem that can set the stage for heart disease, according to the first big study to test this. Read more »