The benefits of eating more coarse grains are more common in the following cases: 1, promote defecation: coarse grains contain a lot of fiber, can play a role in promoting gastrointestinal peristalsis, so that defecation increases; 2, supplement vitamins: coarse grains are rich in vitamins, more food will be over-processed and turned into fine grains, in the process will lose, destroy more vitamins, but coarse grains can better retain the vitamins contained in the food itself. In addition, for people with poor gastrointestinal function, consuming too much coarse grains is easy to increase the gastrointestinal burden, but will have an impact on the body.