Health Topics A-Z

Anemia is the most common blood disorder in the United States. It develops when your blood has a lower-than-normal amount of healthy red blood cells or hemoglobin.

Bleeding disorders are health conditions that affect the way the body controls blood clotting. If blood does not clot enough, the body may have problems with bleeding too much after an injury or surgery.

Blood cholesterol is a waxy, fat-like substance your body needs, but only in the right amounts. When cholesterol levels become unhealthy, your risk of heart attack, stroke, and other serious conditions rises.

Sickle cell disease is a group of inherited disorders that affect hemoglobin — the major protein that carries oxygen in red blood cells.

Varicose veins, or varicosities, are swollen, twisted veins that lie just under the skin. They usually occur in the legs.