Maps of diving cells before and after heart attacks in mice offer additional evidence against the existence of cardiac stem cells.

Among 11 infants treated to date, most survived and their heart function improved.

The organ’s blood-pumping capacity improved with the infusion of cells, a study shows.

Cardiologists have found a way to cool the human heart in a localized way to help reduce muscle damage from heart attacks. 

Research in human patients and mice reveals the role of the circadian clock in the risk of heart damage at different times of day.

A failing heart is easily distinguished from a healthy one by numerous tell-tale signs, including its slender, stretched-out walls, increased size, and pooled blood clots.

Injecting photosynthetic microbes into oxygen-starved heart tissue can improve cardiac function in rodents. 

A cholesterol-lowering drug significantly cut the risk of heart attack and stroke in a recent study. But is it worth the steep cost?

After a heart attack, monkeys given induced pluripotent stem cell–derived cardiomyocytes show more regeneration in the organ, but with risks.