The most common sign of miscarriage is vaginal bleeding. But what does it look like? Get answers to the most commonly asked questions about miscarriage bleeding.

Inside your bones, red marrow helps make red blood cells, platelets, and white blood cells, including plasma cells. There are about 5.7 pounds of it inside the bones of an average adult. Yellow ...

High blood sugar doesn't always show up with obvious signs. Sometimes it shows up through small changes, especially in your ...

People with type O blood enjoy a slightly lower risk of heart disease and blood clotting, but they may be more susceptible to ...

Learn How the Heart Works. Your heart is an amazing organ. It continuously pumps oxygen and nutrient-rich blood throughout your body to sustain life. This fist-sized powerhouse beats (expands and ...

Blood is redistributed from your body’s core to its periphery in order to release heat through your skin. Capillaries at the surface of the skin fill with blood, which is why people often look ...

Discover why your period blood might look watery or thin. Learn 7 common causes and when to worry about changes in your menstrual flow consistency.

Blood on your poop or bleeding during or between bathroom runs could be a sign of hemorrhoids. These swollen blood vessels in the rectum or anus can be painful, itchy, and sometimes bleed.