Definition

Sickle cell anemia is an inherited blood disorder in which the body produces c-shaped red blood cells. Because of their shape, these cells may stick to each other or to the sides of blood vessels, and cause serious health disorders.

Description

Blood is made up of many kinds of cells, including red blood cells (RBCs). An important function of RBCs is to carry oxygen from the lungs to cells throughout the body. Red blood cells contain a molecule known as hemoglobin (pronounced HEE-muh-GLOW-bihn) that collects oxygen from the lungs then releases it when the RBC reaches other cells in the body.

Normally, red blood cells have a plump doughnut shape. In some cases, however, a person's body makes red blood cells that are curved with sharp points at the end. They are called sickle cells because they look like a sickle (a long...