: 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
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In late September 2020, a Mass General endocrinologist called with the test results: Ben had a leptin deficiency.
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Wendy Grossman Kantor, People.com, 7 Aug. 2025
Sleep deprivation is also associated with disruptions in appetite-regulating hormones (ghrelin and leptin), which often increases cravings for sugary, nutrient-poor foods.12
2.
—Lauren Panoff, Verywell Health, 25 July 2025
Their nutrient profile also helps regulate appetite hormones like ghrelin and leptin, which control hunger and satiety.
4.
—Bryan Robinson, Forbes.com, 7 Apr. 2025
Exercise can help balance leptin and ghrelin, hormones involved in hunger, energy balance, and sleep.
—Wendy Wisner, Health, 31 Mar. 2025
See All Example Sentences for leptin
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Wendy Grossman Kantor, People.com, 7 Aug. 2025
Sleep deprivation is also associated with disruptions in appetite-regulating hormones (ghrelin and leptin), which often increases cravings for sugary, nutrient-poor foods.12
2.
—Lauren Panoff, Verywell Health, 25 July 2025
Their nutrient profile also helps regulate appetite hormones like ghrelin and leptin, which control hunger and satiety.
4.
—Bryan Robinson, Forbes.com, 7 Apr. 2025
Exercise can help balance leptin and ghrelin, hormones involved in hunger, energy balance, and sleep.
—Wendy Wisner, Health, 31 Mar. 2025
See All Example Sentences for leptin
Cite this Entry
“Leptin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/leptin. Accessed 10 Sep. 2025.
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leptin
noun
lep·tin
ˈlep-tən 
: 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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