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人到中年以后,体内各组织系统的水分,细胞和蛋白质等逐渐减少,各器管也逐渐萎缩,肌体内的一些功能活动也有所下降,出现生理性消瘦,随着这种生理变化进程,人体的物质消耗亦缓慢地正常进行,确保人体的健康。因此人到中老年应该保持一定的体重。肥胖固然不好,但过分消瘦,亦给人带来烦恼。因为消瘦也应有一定的限度。一般来讲,少于标准体重的30％,为轻度消瘦,少于40％,为中度消瘦;少于50％,为严重消瘦。
To middle-aged people, the body’s tissue system of water, cells and proteins gradually reduced, the tube is also gradually shrinking, some of the body’s functional activity has declined, with physiological weight loss, with this physiological changes, The material consumption of the human body is also slowly and normally carried out to ensure the health of the human body. Therefore, people should maintain a certain weight to middle-aged people. Although obesity is not good, but excessive weight loss, but also bring trouble. Because weight loss should have a certain limit. In general, less than 30% of the standard weight, mild weight loss, less than 40%, moderate weight loss; less than 50%, severe weight loss.