leptin

noun
lep·tin | \ ˈlep-tən \

Definition of leptin 

: 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

Examples of leptin in a Sentence

Recent Examples on the Web

When the women in the study lost weight — about 12 pounds on average — changes in biomarkers for breast cancer, like estrogen, leptin and inflammatory proteins, indicated a reduction in breast cancer risk. New York Times, "The Dangers of Belly Fat," 11 June 2018 The extra calories raise leptin production, a hormone that regulates appetite and energy. Redbook, "23 Ridiculously Easy Ways to Increase Metabolism," 26 July 2017 While this was exciting, more research did not support leptin as a big contributor to obesity. Bryant Stamford, The Courier-Journal, "Americans are eager to hear obesity is not our fault. New research adds to the debate," 22 Mar. 2018 Some years ago, scientists did discover one of the likely mechanisms, which involves leptin, a hormone released by fat cells. Gretchen Reynolds, New York Times, "How Our Bones Might Help Keep Our Weight in Check," 17 Jan. 2018 So, their bodies were not relying solely on leptin to track and respond to weight changes. Gretchen Reynolds, New York Times, "How Our Bones Might Help Keep Our Weight in Check," 17 Jan. 2018 Also involved in the complex process are hormones, particularly the two that are often referred to as hunger hormones, leptin and ghrelin. Amanda Gardner, PEOPLE.com, "How to Control Your Hunger Hormones to Lose Weight and Keep It Off," 19 Dec. 2017 Higher levels of leptin in your bloodstream mean more fat on your body. Jessica Migala, NBC News, "What Happens to Your Brain When You Go on a Diet," 19 Sep. 2017 The diet increased the levels of leptin—a hormone produced by fat cells that usually signals satiety in the brain—in the bone marrow, which promoted the development of fat cells instead of bone cells. Emma Yasinski, Science | AAAS, "New therapy could protect diabetic bones," 5 Sep. 2017

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.

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First Known Use of leptin

1995, in the meaning defined above

History and Etymology for leptin

Greek leptos slender + English -in entry 1

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Dictionary Entries near leptin

-lepsy

lept-

lepteny

leptin

Leptinotarsa

Leptis Magna

leptite

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Time Traveler for leptin

The first known use of leptin was in 1995

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More Definitions for leptin

leptin

noun
lep·tin | \ ˈlep-tən \

Medical Definition of leptin 

: 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

More from Merriam-Webster on leptin

Britannica.com: Encyclopedia article about leptin

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