老年人由于身体机能下降,身体的消化吸收能量也会下降,盲目追求七分饱很容易营养不良,反而会影响健康。
有数据显示,我国年龄>65岁的老年人,约有40%有营养不良的风险,这些人群盲目控制饮食,会促进肌肉流失、骨质疏松等问题出现,免疫功能也会明显下降。
再加上很多老年人对于七分饱的理解不正确,认为是每顿饭减少饭量即可,这也不敢吃那也不敢吃。长期如此的话,会导致身体营养摄入不足,没有足够的能量供给给各脏器,最为明显的症状就是体力下降、免疫力下降,很容易生病。
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而且,消化系统没有充足的刺激来进行消化,时间长了会让胃酸分泌减少、消化能力下降,反而容易引起胃胀、胃痛、便秘等症状出现。
另外,很多老年人觉得少吃=不吃肉类和主食,他们认为主食和肉类吃多了会导致三高、身体肥胖,直接不吃更健康。
实际上,主食和肉类内的营养是身体不可或缺的,长期不吃主食会导致碳水化合物摄入不足,容易导致反应迟钝、情绪低落,肉类摄入不足则会让身体缺乏维生素B12、蛋白质、铁、锌等营养素。
老年人想要养生无可厚非,但要注意方式,不要盲目保持七分饱的饮食模式。而是要保持膳食摄入均衡,让身体可摄入充足的营养。
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65岁以后,如何吃出健康长寿?
吃饭七分饱,这个度是很难把握的,很多人往往是过度节食,时间长了,反而对健康不利。那么老年人究竟如何吃才能既有利于健康又能预防慢性病的发生呢?
1、食物多样化
尽可能保持食物多样化,可让身体摄入不同的营养元素,建议每天至少有12种以上的食物摄入,每周至少25种。
食物要保持粗细搭配、荤素搭配,每餐饭都需要有主食、蛋白质、蔬果,主食要注意粗细搭配、蛋白质可通过摄入蛋奶类食物/瘦肉/豆制品以及海产品等来补充。
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2、三餐分配
三餐建议按照“早餐饱、中餐好、晚餐少”的原则搭配食物,早餐可适当多吃蛋白质和全谷物,午餐保证有足够的能量和营养摄入,晚餐要以清淡为主,热量摄入的配比保持在30%、40%、30%。
此外,《营养与营养学学会杂志》曾发表研究,强调规律三餐对健康的重要性。发现与每日三餐者相比,仅吃两餐的人群全因死亡风险升高7%,心血管疾病死亡风险增加10%。若每日仅一餐,风险分别飙升至30%和83%。对老年人而言,规律三餐可确保营养均衡,避免因能量摄入不足或代谢负担加重引发的健康问题。
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