Anemia has multiple causes, the most common of which are 1) iron deficiency anemia, and 2) blood loss anemia. There are many, many other causes, as well.
hemophagia
The Haemoglobin
Erythropoietin, which is a hormone released by the kidneys, causes the creation of red blood cells in the bone marrow. These red blood cells are created from haemopoietic stem cells.
Leukemia is the type of cancer that can cause white blood cells to attack red blood cells. This occurs when the abnormal white blood cells recognize red blood cells as foreign and begin attacking them.
The number of white blood cells is out numbered bye the red making the blood the color that it is.
No, I think I remember that iron causes the red color to the red blood cells. But, I am not sure.
the hormone that produces red blood cells is erythropoeitin.
a
lack of red cells
Red blood cells contain hemoglobin. These cells are also known as erythrocytes.
Cryoglobulinemia
Red blood cells contain hemoglobin, a protein that binds to oxygen. It is the iron in hemoglobin that gives red blood cells their red color. When oxygen binds to hemoglobin, the color appears brighter red.