Breast milk can be consumed by 12 year olds but is not recommended for children. Breast milk can be a major source of supplemental nutrition for infants and young children, but it is not recommended for 12-year-olds and requires a balanced diet. Breastmilk generally refers to the juice produced from a woman’s breasts to nurse her baby after she gives birth. Breast milk is rich in lactoferrin, proteins, fats and other nutrients. 12 year olds who drink breast milk are not recommended to drink it even though it will not cause any adverse effects on the body, but breast milk is mainly used as a major source of supplemental nutrition for infants and young children. 12-year-old children’s diet structure has been basically consistent with the adult, need to reasonably match the meal, eat more vegetables and fruits, drink pure milk, yogurt and other dairy products, in order to supplement enough protein, vitamins and so on.