The practice of blood-letting or bleeding patients was abandoned in the 19th  century when it became clear there was little benefit. New research suggests the barbaric-sounding practice could offer a very real heart benefit.

Silent stroke may be the most common form of brain injury in children with sickle cell anemia, a rare, painful blood disorder. Recently, researchers have been able to pinpoint the risk factors for such strokes in children.

It's been known that low blood pressure while undergoing kidney dialysis is linked to some nasty side effects. Now the risk of blood clots has been added to that expanding list.