Anemia is the lack of red blood cells in the blood. There are three types of cells in the blood: red blood cells, white blood cells and so-called platelets. When there aren't enough red blood cells in a person's blood, there's a drop in the level of "oxygen" in the blood and throughout the body, and the release of carbon dioxide is not as it should be. Symptoms: paleness, fatigue, often dizziness, numb hands and feet, frequent headaches... Hygiene and health" program with Radio Don Bosco.