眼睛是心灵的窗户。可现在,
人们坐在电脑、电视前的时间越来越长,
这扇"窗户"长期得不到呵护,自然会出现干涩、
视物模糊、酸胀疲劳等症状,轻则导致视力下降,
严重者可能造成失明。
防止眼睛干涩、缓解眼部疲劳,
除了需要适宜的光线和充足的休息外,
给眼睛"补充营养"也是必不可少的。
要使眼睛得到充分的"补给",
首先要注意营养平衡,平时多吃些粗粮、
>杂粮、红绿蔬菜、豆类、水果等含维生素、
蛋白质和膳食纤维的食物。
其次,应该吃些对眼睛有保健功能的食物,
如芝麻,它就能缓解眼睛疲劳、防止干涩。
芝麻自古以来就被认为是强壮益寿的食品,
古代即有以芝麻作为补养食品的传统。
古籍《名医别录》就有"坚筋骨,
明耳目,耐饥渴、延年益寿"之说。
《本草备要》更明确指出,芝麻"明耳目,
乌须发,利大小肠......"。中医认为,
芝麻性平、味甘,具有滋补肝肾、
养血明目、润肠通便、益脑生髓等功效,
可用于肝肾亏损、须发早白、视物模糊、
眼睛干涩等症。眼睛干涩属于中医"内燥",
又称为"津亏"或"血燥",
是一种因视物过久而引起阴亏津少的病症。
由于芝麻有养血润燥、滋阴养肝的功能,
故能缓解眼睛干涩等病症。 从现代营养学分析,
芝麻含有人体所需的多种营养素,
其蛋白质含量多于肉类,含钙量是牛奶的2倍,
还有维生素A、D、E及丰富的B族维生素,
这些营养素都是维护眼睛功能正常的重要物质,
尤其芝麻含有丰富的油酸,亚油酸及甘油酸,
均系不饱和脂肪酸,是人体组织细胞的重要成分,
常吃能使眼睛明亮有神。
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