Fiber exists in beans, grains, fruits, vegetables, wheat bran and whole wheat bread. Although fiber is not considered as the most important nutrient, it is highly valued by doctors and nutritionists. It can promote digestion, especially in removing garbage from the body. The latest research shows that fiber helps to reduce the cholesterol content in the blood. Most doctors recommend taking a certain amount of fiber every day. The initial intake should be less, and then gradually increase to avoid adverse reactions caused by poor adaptability.
Nutrition is a material category, including many components, such as protein, sugar (maltose, fructose, etc. ), cellulose, fat and various vitamins, calcium, iron, zinc and other metals and minerals. Organic matter will eventually be decomposed into sugar by enzymes in the body, which is the source of heat. Most inorganic substances also participate in human metabolism, but they do not provide heat. And heat is in calories, which belongs to the category of energy. For example, how much heat will be released when one liter of gasoline is burned, and how much heat can be generated when one kilogram of fat is decomposed.