(贫血)通常把血液中红血球的减少或血色素的减少称为贫血。贫血的原因主要是由于红血球制造过程上的障碍,红血球破坏速度的增加,失血等等。还可以分为原因明了的继发性贫血和原因不明的原发性贫血。贫血的症状,多呈现皮肤和粘膜苍白,发生心悸、气短、无力。在少年期多发生的是饮食性 (Anemia) A reduction in blood red blood cells or hemoglobin is usually called anemia. The main cause of anemia is due to obstacles in the process of making red blood cells, an increase in the rate of destruction of red blood cells, blood loss and the like. Can also be divided into a clear reason for secondary anemia and unexplained primary anemia. The symptoms of anemia, more pale skin and mucous membranes, palpitations, shortness of breath, weakness. What happens in adolescence is diet