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常言道:七十不留宿,八十不留餐。意思是:年事已高的人,应尽量避免到亲友家赴宴留宿。这一民谚确有其科学道理。 人进入老年期后,眼球晶状体随年龄增加不断变厚,逐渐出现明显的视力减退和聚焦不准;耳内鼓膜也会变得越来越厚,耳道也会萎缩,变得越来越狭窄,使听觉不灵敏;肌肉也会逐渐萎缩,骨质中的无机盐相应增多,骨骼疏松变脆,致使双腿肌力减弱,抬腿不高,举步不
As the saying goes: do not stay seventy, eighty do not leave a meal. Means is: those who have high age, should try to avoid friends and relatives to dinner. This folk proverb does have its scientific truth. People into old age, the lens of the eye with increasing age thickened gradually apparent loss of vision and focus are not allowed; ear drum will become thicker and thicker, the ear canal will shrink and become more and more narrow , So that auditory insensitivity; muscle will gradually shrink, a corresponding increase in bone mineral salts, osteoporosis brittle, resulting in weakening of the legs muscles, legs are not raised, do not move