山药在我们国家应用非常早,古人很早就把它当作蔬菜和药材来使用了。《本草纲目》概括了山药的五大功用:益肾气、健脾胃、止泄痢、化痰涎、润皮毛。现代医学对山药也进行了分析,认为山药里确实含有很多的营养成分,对人体有益,尤其是山药里含有的一种多巴胺,这是由大脑产生并用来传递信息的一种 Yam has been used very early in our country, and the ancients used it as a vegetable and medicinal material very early on. The “Compendium of Materia Medica” outlines the five functions of yam: Yishenqi, spleen and stomach, slobbering, phlegm, and moisturizing fur. Modern medicine has also analyzed yam, and believes that yam does contain many nutrients and is beneficial to humans, especially a kind of dopamine contained in yams. This is a kind of brain produced and used to transmit information.