John Lock was born with his heart on the opposite side of his chest. It was never an issue until he developed atrial fibrillation — a common heart condition that put his life at risk and created a ...

Even a one-hour shift can unsettle circadian rhythms and raise stress hormones, particularly for people already living with heart disease or chronic sleep deprivation.

As daylight saving time approaches, understanding the cardiovascular risks and taking preventive steps could save your life.