血液中赤血球的比例越低患者的体能将越弱，他们也可能会产生虚弱和气喘等症状。 When a person's hemoglobin concentration is low, it is easily caused by anemia. Anemia is a disease caused by a decrease in red blood cells in the body. When the proportion of red blood cells in the blood is lower, the patient will be weaker, and they may also have symptoms of weakness and dyspnea.

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