leptin

[ lep-tin ]

/ ˈlɛp tɪn /

a hormone that is thought to suppress appetite and speed up metabolism.

Origin of leptin

1995–2000; < Greek leptós small, thin + -in²

However, when leptin levels drop, hunger signals go through the roof, often resulting in overeating.

When Is It OK to Cheat? The Pros and Cons of Cheat Days |DailyBurn |July 14, 2014 |DAILY BEAST
One of the primary benefits of cheat days is their effect on leptin levels in the body.

When Is It OK to Cheat? The Pros and Cons of Cheat Days |DailyBurn |July 14, 2014 |DAILY BEAST
Leptin is a hormone secreted by fat cells that is key to maintaining energy balance in the body.

When Is It OK to Cheat? The Pros and Cons of Cheat Days |DailyBurn |July 14, 2014 |DAILY BEAST
In general, the obese have no shortage of leptin (given that leptin is produced by fat cells, if anything they tend to have more).

The Science Behind Feeling Full |Casey Schwartz |November 26, 2008 |DAILY BEAST

The thinner you become, the lower your leptin levels droop, and the more food it takes to satisfy your appetite.

The Science Behind Feeling Full |Casey Schwartz |November 26, 2008 |DAILY BEAST

leptin

/ (ˈlɛptɪn) /

a protein, produced by fat cells in the body, that acts on the brain to regulate the amount of additional fat laid down in the body

C20: from lepto- + -in

leptin

[ lĕp′tĭn′ ]

A peptide hormone and neurotransmitter produced by fat cells and involved in the regulation of appetite.