HealthJuly 28, 2026
prolactin
pro-LAK-tin
Definition
A hormone produced by the anterior pituitary gland that primarily stimulates milk production in mammals.
Etymology
The word is a modern scientific coinage derived from the Latin 'pro-' (meaning 'forward' or 'in favor of') and 'lactis' (the genitive form of 'lac', meaning 'milk'), signifying its function to stimulate lactation.
In the news
In this article, the author explains that interacting with a beloved pet can lead to an increase in levels of prolactin, among other hormones, as part of the physiological response to positive human-animal bonding.
Why pets may help your mental health
Read the full article ↗American Medical Association | AMA