在《老友·专家门诊》给便秘患者的复信中常建议多吃富含纤维的水果蔬菜。有读者问:“这是为什么?”其实,多吃富含纤维的蔬菜水果何止是有利于调理便秘,而是对整个身体都大有好处。纤维在人体的胃肠道中可以吸收更多的水分,使粪便的体积增大,质地变软,加快肠子的蠕动,减少便秘的发生。纤维并不像维生素、矿物质、蛋白质和脂肪那样,在身体里可以被吸收分解,但是它能与体内的胆固醇结合,将后者通过消化系统排出体外,所以对心脏病人也有好处。除了不溶性的纤维之外,在有些谷物的麸皮和水果里,还有些可溶性的纤维。它们在消化的过程中,可转化成一种胶质。这种胶质不但可以和胆固醇结合,而且还可防止脂肪与糖分被身体吸收。美国一份关于临床营养方面的 In the “friend expert outpatient” to patients with constipation rehabilitation letter often recommend eating more fiber-rich fruits and vegetables. Some readers asked: “This is why? ” In fact, eat more fiber-rich fruits and vegetables is not only conducive to the regulation of constipation, but for the whole body are greatly beneficial. Fiber in the human gastrointestinal tract can absorb more water, so that the volume of faeces increased, soft texture, accelerate intestinal peristalsis, reduce constipation. Fibers, unlike vitamins, minerals, proteins and fats, are absorbed and decomposed in the body, but they bind to the body’s cholesterol and excrete it from the body through the digestive system, making them good for heart patients as well. In addition to the insoluble fiber, there are some soluble fibers in some cereal bran and fruit. They can be converted into a gum in the process of digestion. This gum can not only combine with cholesterol, but also prevent fat and sugar from being absorbed by the body. The United States on clinical nutrition