A vitamin K injection has been recommended for newborns in the U.S. since the early 1960s to prevent severe bleeding.

Here’s what the science says.

It's wild to think that we've grown organs in labs, built robots that can perform surgery, and started producing mind-controlled prosthetics, but we still don't know exactly how anesthesia works, or ...

Heart racing suddenly during workouts or daily activity? Doctors explain supraventricular tachycardia (SVT), its symptoms, causes, and when to seek help.