Brown rice refers to all grains except chaff. That is, rice containing cortex, aleurone layer and germ. It is the caryopsis of rice after the husk of the outer protective layer is removed, and the inner protective layer (pericarp, seed coat and nucellar layer) is complete, with rough taste and dense texture. Cooking takes time, but the slimming effect is remarkable. Compared with ordinary refined white rice, brown rice is rich in vitamins, minerals and dietary fiber, and is regarded as green and healthy food. Modern nutrition research has found that vitamin B and vitamin E in rice bran and brown rice germ can improve human immune function, promote blood circulation, help people eliminate depression and irritability, and make people full of vitality. In addition, trace elements such as potassium, magnesium, zinc, iron and manganese in brown rice are beneficial to prevent cardiovascular diseases and anemia. It also retains a large amount of dietary fiber, which can promote the proliferation of intestinal beneficial bacteria, accelerate intestinal peristalsis, soften feces, and prevent constipation and intestinal cancer; Dietary fiber can also combine with cholesterol in bile to promote the discharge of cholesterol, thus helping patients with hyperlipidemia to lower their blood lipids. Eating brown rice is especially beneficial to diabetics and obese people. Because the carbohydrate in it is wrapped by crude fiber tissue, the digestion and absorption speed of human body is slow, so it can control blood sugar well; At the same time, trace elements such as zinc, chromium, manganese and vanadium in brown rice are beneficial to improve the sensitivity of insulin and help people with impaired glucose tolerance. Japanese research has proved that the glycemic index of brown rice is much lower than that of white rice, and it has a better satiety when eating the same amount, which is conducive to controlling food intake and thus helping obese people lose weight. In Compendium of Materia Medica, it is believed that rice buds can relieve annoyance, be gentle, benefit essence, strengthen spleen and stop diarrhea, which is very beneficial to human body. Chinese medicine believes that brown rice is sweet and warm, which can strengthen the spleen and nourish the stomach, tonify the middle energizer and replenish qi, harmonize the five internal organs, soothe the nerves and help digestion and absorption.