If our body wants to grow and develop well, we need to get balanced nutrition, but no food can meet all our nutritional needs. Even breast milk can only meet all the nutritional needs of 0-6 months old babies, so complementary food should be supplemented when the baby is 6 months old. Considering that babies grow too fast and some have insufficient breast milk, complementary foods, such as rice paste made of rice flour, fruit and vegetable juice, egg yolk paste and so on, have been added since they were four months old.
There are five common foods in our life. The first category is sweet potatoes, such as rice, millet, flour and potatoes, which mainly provide carbohydrates, protein, dietary fiber, minerals and B vitamins. The second category is vegetables and fruits, which mainly provide dietary fiber, minerals, vitamins and phytochemicals. The third category is animal food, including livestock meat, poultry meat, fish, milk and eggs, which mainly provides protein, fat, minerals, vitamins A, D and B vitamins. The fourth category is soybeans and nuts, which mainly provide protein, fat, minerals, B vitamins and vitamin E, etc. The fifth category is pure energy food, such as vegetable oil, starch, sugar, wine, etc., which mainly provides energy. In these foods, each food contains different kinds and quantities of nutrients, which cannot meet all the needs of our body alone. Therefore, we must eat different kinds of food to achieve a reasonable mix, so as to intake the right amount of energy and adequate nutrition, so that our bodies can get good growth and development.
References:
Sun Changyao. Nutrition and Food Hygiene, 8th Edition, Beijing, 20 17, People's Health Publishing House.