2. Soymilk is rich in protein, minerals and a lot of dietary fiber. It can help digestion, promote intestinal peristalsis and facilitate defecation. Drinking soybean milk often has many benefits to the body, which can not only increase nutrition, but also help to lose weight. In particular, drinking soybean milk for dinner and eating vegetables and fruits to lose weight instead of staple food will have a better weight loss effect. You can eat bananas, apples, tomatoes and cucumbers. But it is more scientific and reasonable to take an active part in physical exercise to lose weight.