水果、蔬菜、豆类、坚果及中草药等许多天然植物,既含有丰富的膳食纤维、维生素和矿物质,又有一定的防癌和治疗某些慢性疾病的功效;而有些植物性食物,尽管没什么营养价值,却含有重要的生物活性物质,如黄酮、植物固醇、植物雌激素等。研究人员对这些化合物进行了反复试验,发现吃 Many natural plants, such as fruits, vegetables, beans, nuts and Chinese herbs, are rich in dietary fiber, vitamins and minerals as well as effective in preventing cancer and treating certain chronic diseases. Some plant foods, though nothing Nutritional value, but it contains important bioactive substances, such as flavonoids, phytosterols, phytoestrogens and so on. The researchers conducted repeated tests on these compounds and found that they had eaten