pro·​lac·​tin | \ prō-ˈlak-tən How to pronounce prolactin (audio) \

Definition of prolactin

: a protein hormone of the anterior lobe of the pituitary that induces lactation

Examples of prolactin in a Sentence

Recent Examples on the Web And of course there’s prolactin, the breastfeeding hormone, and stress hormones to boot. Dina Litovsky, Smithsonian Magazine, 22 Apr. 2021 In men, orgasm increases production of a hormone called prolactin that promotes deep wave sleep -- the type the body needs to repair and restore itself. Sandee Lamotte, CNN, 21 Apr. 2021 Some studies have showed evidence that ingredients in beer can increase prolactin, a hormone necessary for milk production; others have showed the opposite. Lisa Drayer, CNN, 17 Mar. 2021 This is because the hormones that promote breast milk production (mainly, prolactin) also suppress ovulation. Christina Oehler,, 19 June 2019 This is because their effect on the neurotransmitter dopamine may have the potential to increase the levels of the hormone prolactin in the body, which can lead to anovulation in some people. Korin Miller, SELF, 17 Jan. 2019 The study authors believe vitamin E reduced the effects of the hormone prolactin, which can contribute to cramps, weight gain and breast tenderness. Amy Capetta, Woman's Day, 19 June 2015 To get the highest amount of prolactin, science suggests having an orgasm with a partner if possible. Sandee Lamotte, CNN, 1 Mar. 2018 Estrogen interacts in various ways with prolactin, a hormone that’s necessary for breastmilk production. Korin Miller, SELF, 18 Jan. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'prolactin.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of prolactin

1932, in the meaning defined above

History and Etymology for prolactin

pro- entry 2 + lact- + -in entry 1

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The first known use of prolactin was in 1932

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Cite this Entry

“Prolactin.” Dictionary, Merriam-Webster, Accessed 24 Jul. 2021.

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pro·​lac·​tin | \ prō-ˈlak-tən How to pronounce prolactin (audio) \

Medical Definition of prolactin

: a protein hormone of the adenohypophysis of the pituitary gland that induces and maintains lactation in the postpartum mammalian female abbreviation PRL

called also luteotropic hormone, luteotropin, mammotropin

More from Merriam-Webster on prolactin Encyclopedia article about prolactin


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