hlftan's BLOG

 just want to share the health imformation

纤维在人体内的作用是什么?
纤维通过胃部进入小肠，继而到达大肠，在这里纤维会吸收水份及其他有害物质，最后成为粪便排出体外。

纤维有什么好处呢?
适量摄取纤维可以缩短食物及有害物质在肠道内的停留时间，协助加速食物蠕动和排除体内毒素及废物。

医学专家建议每日增加食用纤维素的摄入及减少热量和脂肪，从而达到减肥目的。纤维素主要存在于植物和谷物中，对身体健康大有裨益，可降低胆固醇和血压，预防心脏病和肥胖。纤维素是天然的“清道夫”，它能使疾病产生的毒素经消化系统排出体外。如果有足量的纤维素存在于肠胃中，可使您保持更长时间的饱腹感，免受饥饿的折磨

何为抗氧化因子：
    每个人都得益于抗氧化因子，抗氧化因子是天然成份，可以中和氧“自由基”，保护您的细胞免受伤害。比如每次吸气时我们吸入污染物，抗氧化因子可中和这些污染物，从而减少危害。机体通常通过氧化作用产生能量，并去除细菌和病毒，但在生病或压力过大时，机体需要抗氧化因子提供额外的帮助。
    许多成年人的饮食通常只图方便，却缺少很多的营养成份，补充抗氧化因子可以很好地弥补这一缺陷

Introduction
Essential amino acids
Why learn this?

Amino acids play central roles both as building blocks of proteins and as intermediates in metabolism. The 20 amino acids that are found within proteins convey a vast array of chemical versatility. The precise amino acid content, and the sequence of those amino acids, of a specific protein, is determined by the sequence of the bases in the gene that encodes that protein. The chemical properties of the amino acids of proteins determine the biological activity of the protein. Proteins not only catalyze all (or most) of the reactions in living cells, they control virtually all cellular process. In addition, proteins......

Introduction
Essential amino acids
Why learn this?

Amino acids play central roles both as building blocks of proteins and as intermediates in metabolism. The 20 amino acids that are found within proteins convey a vast array of chemical versatility. The precise amino acid content, and the sequence of those amino acids, of a specific protein, is determined by the sequence of the bases in the gene that encodes that protein. The chemical properties of the amino acids of proteins determine the biological activity of the protein. Proteins not only catalyze all (or most) of the reactions in living cells, they control virtually all cellular process. In addition, proteins......

Introduction
Essential amino acids
Why learn this?

Amino acids play central roles both as building blocks of proteins and as intermediates in metabolism. The 20 amino acids that are found within proteins convey a vast array of chemical versatility. The precise amino acid content, and the sequence of those amino acids, of a specific protein, is determined by the sequence of the bases in the gene that encodes that protein. The chemical properties of the amino acids of proteins determine the biological activity of the protein. Proteins not only catalyze all (or most) of the reactions in living cells, they control virtually all cellular process. In addition, proteins......