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Old 05-19-2011, 10:34 AM   #1
ghrjdu539
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Default 水宜生价格|青春期最应补充的六种营养

青春期正处于生长发育的旺盛时期,对各种营养的需求量远远高于成人,因此营养问题显得更为重要。营养素的功 能在于构成躯体,修补组织,供给热量,补充消耗,调节生理功能,水宜生官方网站。青春期应补充的营养素有:1、碳水化合物青春期所需要的热量较成人多25%~50%。这是因为青少年活动 量大,基本需要量多,而且生长发育又需要许多额外的营养,热量主要来自碳水化合物,亦即谷类食物,所以青少 年必须保证足够的饭量。2、蛋白质蛋白质是生长发育的基础,身体细胞大量增殖,其构成均以蛋白质为原料。生 长发育期的儿童和青少年对蛋白质的需要量是每日每千克体重2~4克,健尔马足疗机。人体的蛋白质主要由食物供给,蛋类、牛奶、瘦肉、大豆、玉米等食物均含有丰富的蛋白质,水宜生价格,混合食用,可以使各类食物蛋白质互相补充,营养得到合理利用。3、维生素在生长发育中,维生素是必不可少 的。它不仅可以预防某些疾病,还可以提高机体免疫力。人体所需要的维生素大部分来自蔬菜和水果。芹菜、豆类 等蔬菜含有大量B族维生素;山楂、鲜枣、西红柿含有大量维生素C。4、矿物质矿物质是人体生理活动必不可少 的,尤其是青少年,对矿物质的需要量极大。钙、磷参与骨骼和神经细胞的形成,如钙摄入不足或钙磷比例不适当 ,必然会导致骨骼发育不全。奶类、豆制品含有丰富的钙,水宜生价格。青少年对铁的需要量高于成人。铁是组成血红蛋白的必要成分,如果膳食中缺铁,就会造成缺铁性贫血。特别是 女性,每次月经要损失50~100毫升血,至少要补充15~30毫克铁。油菜、韭菜中含有丰富 的铁,健尔马足疗机三代。5、微量元素微量元素虽然在体内含量极少,但在青少年的生长发育中起着极为重要的作用。特别是锌,我国规 定每日膳食锌的摄入量为15毫克。含锌丰富的食物有动物肝脏、海产品。6、水青少年活泼好动,需水量高于成 年人,每日摄入2500毫升水,才能满足人体代谢的需要。水的摄入量不足,会影响机体代谢及体内有害物质及 废物的排出。如果运动量大,出汗过多,健尔马足疗机厂家,还要增加饮水量。这里讲的水的摄入量不是指喝进去的水量,而是指喝入的水量加上吃进的食物中含水量的总和 。
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