Food fiber cannot be digested to absorb inside alvine path, but but imbibe, stimulate alvine path peristalsis thereby, prevent the happening of constipation and diarrhoea.

• 食物纤维在肠道内不能被消化吸收，但可吸收水分，从而刺激肠道蠕动，防止便秘与腹泻的发生。