Oatmeal can help to lose weight for the following reasons: First, oatmeal is low in calories and contains a lot of dietary fiber, which can effectively make people feel full, thus reducing the desire for other caloric food intake, which has a positive effect on the reduction of calories and fat in the human body. Secondly, the crude fiber in oats can also absorb excess cholesterol and fat in the body, and make it excreted through metabolism. Finally, oatmeal is also rich in unsaturated fatty acids, can not make cholesterol esterification, effectively reduce cholesterol and triglycerides in the human body, for human weight loss also has a certain role. Although oatmeal can lose weight, but if consumed too much easily caused by human indigestion, to the gastrointestinal burden, so the consumption of oatmeal needs to be moderate.