First of all, it is important to recognize the structure of the breast: what are the factors that stimulate milk 1, the role of hormones When the baby sucks on the nipple, the stimulation is transmitted to the pituitary gland and produces hormones called lactogen and oxytocin. Lactogen conveys the command to turn blood into breast milk, and oxytocin plays the role of promoting the discharge of breast milk that accumulates in the milk ducts. When the baby sucks on the nipple, the breast milk is expelled. At the beginning of breastfeeding, it may not go well because both the baby and the mother are new. However, with repeated breastfeeding, mother and baby will gradually become skilled and cooperate with each other. 2. Breast milk secretion mechanism The glandular vesicles are composed of a large number of glandular cells. Breastmilk is produced in the glandular cells and then secreted into the glandular vesicles. Breastmilk is excreted through the milk ducts. The myoepithelial cells around the glandular vesicles contract like a pump to discharge breastmilk. Components of breastmilk One of the many benefits of breastmilk is that it contains a balance of nutrients. Its main components include fat, lactose and protein. At different times, the ratio of these components is automatically adjusted to suit the growing needs of the baby. This makes breast milk the best food for your baby. The main components of breastmilk – fat, lactose and protein – have the following properties. Lactose is the source of energy and has the largest proportion of the main components of breast milk. Fat is an important component for your baby’s brain development and maintenance of body structure. Protein is broken down into amino acids as it is absorbed by the baby’s body and becomes a source of muscle formation. It also contains important immune proteins, such as lactoferrin and secretory immunoglobulins. Other components of breast milk have the following functions: 1. To reduce the occurrence of allergies, substances in breast milk are able to form a protective film on the intestinal wall and promote the development of the intestinal epidermis. Therefore, it can prevent allergens from invading the body through the baby’s undeveloped intestines with numerous openings. Breast milk contains enzymes that help digestion, such as lipase and amylase, so newborns with fragile gastrointestinal tract can easily digest and absorb the nutrients in breast milk.