Your body releases certain hormones that both trigger and tamp down your appetite—and it seems like sleep loss messes with those, the new study found.
Poor sleep messes with the balance of your hormones that keep your appetite in check. For instance, it may blunt the effectiveness of glucagon-like peptide 1, a hormone produced in your intestine that promotes satiety.
Then at the same time, it can stoke the production of ghrelin, a hormone produced in your stomach that makes you feel hungry.
As a result, your appetite can rage on—even if you’ve eaten enough that should satiate it.