What is Anemia?

What is Anemia?
Also known as hemolytic anemia, low hematocrit, low hemoglobin, low red blood cell count, sideroblastic anemia and thalassemia, anemia may have different names and different causes why it occurs, but the end result is always the same; not enough iron to carry oxygen in the blood either because of a lack of red blood cells themselves or a lack of iron in the existing blood cells.