Supplements Post module evaluation References Milk production is initiated in the breasts in the post-partum period due to prolactin production and decreased estrogen and progesterone after delivery of the placenta. By day 3 or 4 post-partum, stimulation of the breast by suckling is required to continue milk production.
Mothers produce milk between feedings due to elevated baseline levels of prolactin.
During continued lactation, milk production is based on infant demand. The rate of milk production varies over the day. Suckling or any nipple or breast manipulation stimulates sensory nerves in the areola and nipple. These nerves stimulate the pituitary gland to release oxytocin along with prolactin. A conditioned milk ejection can occur when a woman hears her baby cry.