Lactation disorders

Breast milk is called lactation. Breastfeeding is called breastfeeding. Lactation is caused by various hormones acting on the developing mammary glands. In addition to nutritional conditions, the development of the mammary glands requires the role of estrogen (estrin and progesterone). After the spring period, due to the increased secretion of these hormones, it can accelerate breast development. During pregnancy, the increased estrogen concentration in the blood and the synergistic effect of the pituitary hormones make breast development more pronounced. After childbirth, the prolactin, adrenocorticotropin, and auxin secreted by the anterior pituitary gland act on the developed mammary glands, causing milk secretion. The maintenance of lactation requires breastfeeding stimulation. Via the neural pathway, the lower part of the thalamus acts on the anterior lobe of the pituitary gland, promotes the secretion of the above hormones, and releases the oxytocin in the posterior lobe. Oxytocin reaches the mammary gland, shrinking the myoepithelial cells that surround the milk-producing mammary gland cells to promote milk production. If the breast does not expel milk, the internal pressure of the breast will increase, and the secretion of breast cells will be impaired.