A new study shows that the sinoatrial node (SAN) -- a small but powerful structure in the human heart that serves as its natural pacemaker and initiates every normal heartbeat -- runs on different ...

For decades, doctors and researchers have puzzled over a basic heart rhythm mystery: Why do women tend to have faster heartbeats while men are more likely to develop irregular rhythms like atrial ...

The Framingham Heart Study is the longest running cohort study on cardiovascular health in human history. More than 15,000 volunteers with roots in Framingham have allowed researchers to track their ...

High cholesterol has long gotten a bad rap for causing poor heart health — but a new study suggests that the low-carb ketogenic diet may not be linked to cardiovascular disease. The study, led by The ...

Niacin, or vitamin B3, has long been a U.S. public health darling to the point that it is added, by law, to cereal products. But a new study published Monday in Nature Medicine points to a potentially ...