Psychology / Unit 9 Psych 1004 short lesson, about 20 seconds
Leptin and Set Point
Captions available
The idea
Leptin is a hormone released by fat cells that signals energy stores to the brain, contributing to a defended body weight.
In practice
Falling leptin after weight loss increases hunger signals and lowers energy expenditure.
Where people slip
The defended range is influenced by genetics and environment together, and it resists change in both directions.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Unlocks
Something wrong in this lesson? Flag it · Sources for Psychology