Anemia is a health condition in which the body does not make enough RBCs (red blood cells) or hemoglobin. Hemoglobin is an essential protein found in the blood that is responsible for giving blood its colour and it also helps in the transportation of oxygen throughout the body. When you have low hemoglobin, you have anemia, when you have anemia, you encounter symptoms, like fatigue and shortness of breath. Anemia can be mild to severe and short-term to even long-term.