Smartwatches use optical sensors like PPG and ECG to track heart rate, rhythm, and blood oxygen, aiding in early detection of ...

Nearly 14 million Americans live with arrhythmias. Learn to identify the warning signs of these common heart rhythm disorders ...

A landmark study from Hiroshima University is shedding new light on a question that has long intrigued doctors and ...

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 ...