Bran is a by-product of the processing of grains such as rice, rice grains, wheat, oats, etc. and is a coarse grain. When consumed, it can replenish the body with carbohydrates and other nutrients. Each 100 grams of wheat bran contains 216 kcal of energy, 64.51 grams of carbohydrates, 42.8 grams of crude fiber, 2.212 grams of polyunsaturated fatty acids, 240 micrograms of lutein-like, 611 milligrams of magnesium, 1,182 milligrams of potassium, 1,013 milligrams of phosphorus, 600 milligrams of lysine and other nutrients. Each 100 grams of oat bran contains 246 kilocalories of energy, 66.22 grams of carbohydrates, 15.4 grams of crude fiber, 2.766 grams of polyunsaturated fatty acids, lutein-like 180 micrograms, magnesium 235 mg, potassium 566 mg, lysine 760 mg and other nutrients. As the bran is rich in crude fiber and minerals, vitamins and other nutrients, consumption can supplement the body’s required nutrients and provide energy. However, excessive consumption may cause indigestion, bloating, nausea and other gastrointestinal discomfort. It is recommended that when consuming bran, pay attention to control the amount, and reasonably match the diet, the combination of coarse and fine grains. Some people are allergic to bran and should not consume it.