11/24/2018 / By Frances Bloomfield
The survival instinct is inherent in us all, as is evidenced by a recent study by researchers from New Zealand. The team of University of Otago scientists discovered that the hormone prolactin, best known for its role in milk production, also helps solidify the nurturing bond between mother and child, reported Science Daily.
They came to this conclusion after knocking out the prolactin receptors in the brains of adult female mice. These mice were able to get pregnant and bear babies normally. However, they abandoned their pups 24 hours after giving birth. By contrast, mice who had been subjected to subtle changes to their prolactin capacity only showed modest changes to their displays of maternal care.
“Our data establish a critical role for prolactin-induced behavioral responses in the maternal brain, ensuring survival of mammalian offspring,” the researchers wrote in their study.
“Our findings establish a critical role for prolactin for more than simply milk production,” said study co-author Dr. Rosie Brown. “This work is the first to show this hormone is a literal life saver in that it establishes and maintains the normal parental care that ensures offspring survival.”
Brown further noted that the absence or deficiency of prolactin in some animal species may partly explain why mothers of these species desert their young. Any disruptions in the communication between the brain and prolactin could sever the link between mothers and their babies before it has time to even materialize.
Breastfeeding, much like prolactin itself, is absolutely necessary for a mother and her baby. Lactation happens for a reason — several good ones, actually:
As you can see, lactation occurs to ensure the survival of children and their mothers, and breastfeeding is necessary just for that. This natural cycle is but one of many that the body undergoes to help itself get through this day and the next.
To read up on more news relating to pregnancy, childbirth, and child rearing, simply go to MindBodyScience.news today.
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Tagged Under: bonding, breast milk, breastfeeding, children, hormones, lactation, offspring, prolactin, women's health