蔬菜中含有极丰富的硝酸盐,它进入胃部后可以产生一种叫氧化氮的化合物,而氧化氮能杀死胃中的有害细菌,故餐前先吃些蔬菜可对防止胃癌起到一定作用。此外,蔬菜全部与正餐一同进食,这样会影响消化及营养的吸收。另一方面,空肚吃蔬菜,蔬菜的养分会在短时间内达至血液中,有助于补充体力和养分,使 Vegetables contain very rich in nitrate, which enters the stomach can produce a compound called nitric oxide, and nitrogen oxide can kill harmful bacteria in the stomach, so eating vegetables before meals can play a role in preventing gastric cancer effect. In addition, all vegetables and dinner together, this will affect the absorption of digestion and nutrition. On the other hand, empty stomach to eat vegetables, vegetables, nutrients will reach the blood in a short time, helps to add physical strength and nutrients, so that