leptin

noun

lep·​tin ˈlep-tən How to pronounce leptin (audio)
: a peptide hormone that is produced by fat cells and plays a role in body weight regulation by acting on the hypothalamus to suppress appetite and burn fat stored in adipose tissue

Example Sentences

Recent Examples on the Web Some researchers have also suggested that irregular levels of hormones associated with obesity, like glucose-regulating adiponectin and weight-regulating leptin, compromise immune responses to the virus. Chin Jou, Scientific American, 23 Aug. 2020 Further studies revealed that a hormone called leptin, responsible for appetite suppression, is regulated by the circadian clock. New York Times, 7 May 2020 A year later, blood samples were collected from the patients for analysis of fasting and postprandial levels of ghrelin, leptin, peptide YY, amylin and other hormones. Daniel Engber, Scientific American, 13 Jan. 2020 Also implicated is the hormone leptin, which is released by fat cells and is responsible for feelings of satiety. Jeffrey Kluger, Time, 6 Nov. 2019 Nobody mentions leptin or insulin or carbohydrate metabolism. Tamar Haspel, Washington Post, 21 Oct. 2019 The researchers next repeated the procedure, but in mice that had been bred to produce very little leptin. Gretchen Reynolds, New York Times, 17 Jan. 2018 Consistently logging eight hours of sleep a night can help boost low testosterone levels and have a positive impact on cortisol, leptin and insulin levels. Christy Brissette, Washington Post, 5 Aug. 2019 As a result, leptin gets unblocked—sometimes in as little as a week, resulting in an end to ‘insatiable hunger’ and compulsive grazing. Stephanie Walden, USA TODAY, 11 Jan. 2018 See More

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

Word History

Etymology

Greek leptos slender + English -in entry 1

First Known Use

1995, in the meaning defined above

Time Traveler
The first known use of leptin was in 1995

Dictionary Entries Near leptin

Cite this Entry

“Leptin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/leptin. Accessed 6 Feb. 2023.

Medical Definition

leptin

noun
lep·​tin ˈlep-tən How to pronounce leptin (audio)
: a peptide hormone that is produced by fat cells and plays a role in body weight regulation by acting on the hypothalamus to suppress appetite and burn fat stored in adipose tissue

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