The heart is the body's hardest-working muscle. Whether you're awake or asleep, or exercising or resting, your heart is always at work. It pumps blood through arteries to deliver oxygen to organs and ...

Aortic stenosis is a narrowing of the aortic valve that affects how blood flows through the heart and body. While not often linked to heart valve narrowing, high and irregular blood pressure can ...

Everyone knows that when you get cut, you bleed—a result of the constant movement of blood through our bodies. But do you ...

Tetralogy of Fallot is a group of four heart abnormalities that are present from birth. It can affect how the blood flows in the heart and how much oxygen reaches the lungs and the rest of the body. A ...

Blood flow restriction training—once a niche rehabilitation method used primarily by physical therapists—has quietly transformed into one of fitness’s most intriguing innovations. This technique uses ...