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[mass noun] A protein produced by fatty tissue which is believed to regulate fat storage in the body.
- ‘Obese people are also believed to have a faulty receptor in their brains, which is meant to measure levels of leptin, a protein produced by fatty tissue.’
- ‘Fat cells produce leptin, a protein known to help trigger puberty.’
- ‘Sleep deprivation lowers leptin, a blood protein that suppresses appetite and seems to affect how the brain senses when the body has had enough food.’
- ‘Our bodies are thought to have a built-in system to measure levels of a key protein, leptin, which is produced in fatty tissue.’
- ‘Apart from its role in regulation of fat metabolism, leptin may also regulate insulin release as part of an adipoinsular feedback.’
1990s: from Greek leptos fine, thin + -in.
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