Insulin resistance is often linked to type 2 diabetes, but its effects go far beyond blood sugar levels. It can silently damage the heart and blood vessels for years before diabetes is diagnosed. In ...

Experts say you should avoid them as much as possible.

For years, scientists have known that the heart has its own network of nerves, the intrinsic cardiac nervous system (ICNS), ...

Smoking affects the lungs and other organ systems, including the heart. The carbon monoxide from tobacco reduces oxygen to the heart, causing it to beat faster to deliver oxygen to the body. Share on ...

Coronary arteries are a vital part of the human heart, providing it with oxygen-rich blood so that it can work. By comparing the hearts of mammals, birds, reptiles, fish and frogs, a ...