The efficacy of oats: 1, can laxative, oats are rich in dietary fiber, can mechanically stimulate intestinal peristalsis, for the prevention of constipation has a very good role. 2, can prevent the occurrence of overweight and obesity, because oats in the dietary fiber through the absorption of water expansion can increase the sense of satiety, which can avoid the intake of other excessive food, in the prevention and control of overweight and obesity role is very strong. 3, can assist in reducing blood sugar, because oats in the dietary fiber can slow down the rate and degree of sugar absorption, for the effective control of blood sugar levels have a positive effect. 3, can assist in reducing blood sugar, because the dietary fiber in oats can slow down the speed and degree of sugar absorption, for effective control of blood sugar levels have a positive effect. Oats is contraindicated for gastric ulcers, gastritis people in the consumption of strict intake, otherwise too much dietary fiber will stimulate the ulcer surface and aggravate the disease.