“有钱难买老来瘦” ,老年人适当瘦一点 ,可减轻心脏负担 ,防止动脉硬化 ,有利于身体健康。但有些情况下的消瘦 ,则应警惕是疾病的兆头。糖尿病 :病早期表现多为肥胖 ,但时间一长 ,会引起消瘦。个别糖尿病患者无明显的“三多（多饮、多食、多尿）”症状 ,但由于体内糖代谢紊乱 “Rich money hard to buy old and thin,” the elderly a little thinner, can reduce the burden on the heart, prevent atherosclerosis, is good for your health. But in some cases weight loss, you should be alert is a sign of disease. Diabetes: Early manifestation of the disease are mostly obese, but over time, can cause weight loss. Individual diabetic patients without obvious “three more (polyhydramnios, polyphagia, polyuria)” symptoms, but due to the disorder of glucose metabolism