In adults, a typical resting heart rate is 60 to 100 beats per minute, but structural or electrical disorders of the heart can cause it to rise or fall. Medications, a lack of sleep, and stress ...

Heart complications related to opioids can increase the risk of death, research shows. For instance, a study of people with cancer who took opioids found that they were more likely to die from a ...

Left main coronary artery. This artery sends blood to the left side of the heart muscle. This includes the left ventricle and left atrium. It divides into these branches: Left anterior descending ...

During feelings of anxiety, the brain kicks the heart into overdrive. But as it races, does the heart, in turn, talk to the brain? For centuries, scientists have debated whether the heart holds sway ...