I'm Dr. Bob Lahita, Chairman of Medicine at Newark Beth Israel Medical Center and Professor of Medicine at the University of Medicine and Dentistry of New Jersey. The segment today is: what your red blood cell count means.Well, in the blood we have white cells and we have red cells. The white cells are divided up into various groups such as: neutrophils, eosinophils, basophils. All of these kinds of cells which belong in the white cell family have a distinctive role to play in your body.The red cells have only one role to play: and the red cells job is to take oxygen to the muscles and other tissues. It takes oxygen out of the air in your lungs from the alvioli, which are the air sacs in the lung and it carries the oxygen to where it's needed.Absence of your red cells will result in what's called anemia. Anemia results in the lack of delivery of oxygen to your muscles and other tissues, and that can result in exhaustion, it can result in a severe coma, or it can result even in death if the anemia is profound. Usually patients don't get that far along because we discover a low red cell count, and we do tests to measure the red blood cell count. So it's important to have a normal red blood cell count.For more information on this go to About.com.