The human body is dynamic, yet many of its systems are set in delicate balances. Hormones regulate many of the body’s functions, and when hormone levels are imbalanced, they can have a significant impact. Such is the case with prolactin, one of several hormones the pituitary gland produces.
Prolactin plays a vital role in stimulating milk production after childbirth. The levels increase during pregnancy. This causes the mammary glands to enlarge as the mother’s body prepares for breastfeeding. When the baby is feeding, prolactin also helps release the milk in the mother’s breast.
The high levels of this hormone not only help with feeding the newborn, but also inhibit ovulation for several months during breastfeeding. High levels of prolactin can also cause infertility.