曾晶介绍，对于老年人，体重过轻或消瘦会增加骨质疏松、食道和胃肿瘤等疾病的风险，同时导致对疾病的抵抗耐受力降低、缩短寿命。目前普遍认为，老年人的健康体质指数在20～27之间为宜，也就是说，微胖的老人相对更健康。
zēngjīng jièshào ，duìyú lǎoniánrén ，tǐzhòng guò qīng huò xiāoshòu huì zēngjiā gǔzhí shūsōng 、shídào hé wèi zhǒngliú děng jíbìng de fēngxiǎn ，tóngshí dǎozhì duì jíbìng de dǐkàng nàishòulì jiàngdī 、suōduǎn shòumìng 。mùqián pǔbiàn rènwéi ，lǎoniánrén de jiànkāng tǐzhì zhǐshù zài 20 ～27 zhījiān wèiyí ，yějiùshìshuō ，wēi pàng de lǎorén xiāngduì gèng jiànkāng 。
Zeng Jing said that for the elderly, underweight or weight loss will increase the risk of osteoporosis, esophagus and stomach cancer, and at the same time lead to reduced resistance to disease and shorten life. It is generally believed that the healthy body mass index of the elderly is between 20 and 27, that is to say, old people who are slightly plump are relatively healthier.