Blood Clots
In this Article
How Does Blood Clot?
What Causes Blood Clots?
Medications Affect the Clotting Process
Medical Conditions That Cause Blood-Clotting Problems
Blood has a seemingly impossible job: It must flow continuously and smoothly throughout your body for an entire lifetime, but quickly shut off to prevent spills when you get a cut or injury.
Blood clots are healthy and lifesaving when they stop bleeding. But they can also form when they aren't needed and cause a heart attack, stroke, or other serious medical problems.
http://www.webmd.com/dvt/blood-clots#1
