Kidney beans contain very little fat, so if they are not eaten in large quantities, they will generally not lead to obesity. Hudou, also known as broad bean, summer bean and arhat bean. It can be used for stir-frying and cold salad, and can also be made into various snacks. It is a popular food. Hudou contains a lot of calcium, potassium, magnesium, vitamin C and so on. And the types of amino acids are relatively complete. Hudou contains calcium, zinc, manganese and other important components that regulate the brain and nerve tissue, and is rich in choline, which has the function of strengthening memory and strengthening the brain. For mental workers, eating beans properly may have some effects. Vitamin C in beans can delay arteriosclerosis, and crude fiber in broad bean skin can reduce cholesterol and promote intestinal peristalsis. Generally speaking, eating beans often has the health care functions of strengthening the brain, lowering cholesterol and preventing cardiovascular and cerebrovascular diseases.