👉 Erythropenia is a condition in which the number of red blood cells produced by your body increases. This can happen when there are too many red blood cells, or when there are no enough red blood cells left to carry oxygen around your body. When you have high levels of erythropoietin (Hyp), it's called anemia. Anemia is a condition where the number of red blood cells in your body is low. This can cause fatigue, weakness, and other symptoms
