General causes of thrombocytopenia include poor nutrition, infections, radiotherapy, and some drugs.导致血小板减少症的原因一般有营养不良、感染、辐射治疗和一些药物。His health has been jeopardized by poor nutrition.因营养不良他的健康受到了损害。Because of his poor nutrition, he has grown weaker and weaker.他因为营养不良，身体越来越虚弱。