Dietary fiber not only relieves stool and prevents the absorption of harmful substances, but also affects the absorption of protein, minerals and other nutrients in food. The Chinese Society of Nutrition advises adults to take 25 to 35 grams a day. For children and adolescents at the growth stage, excessive dietary fiber may lead to malnutrition by taking some nutrients necessary for the human body out of the body. Therefore, high-fiber food should be in moderation, especially for children. Dietary fiber is abundant in vegetables and fruits, coarse grains, legumes, fungi and algae. Various beans, such as black beans, soybeans, red beans and mung beans, are several or even more times as many vegetables and fruits. Fungus and algae foods such as agaric, kelp, pinnatifid and mushroom are also rich in dietary fiber. Root vegetables also contain more fiber, such as carrots, sweet potatoes, potatoes and so on.
