If someone goes to bed hungry, what happens in the body overnight that causes them to wake up not hungry?

Question

If someone goes to bed hungry, what happens in the body overnight that causes them to wake up not hungry?

In: Biology

Answer 1

The only reason you feel hungry is due to hormones. When your insulin goes down while you sleep, the hormone leptin starts doing its job, suppressing hunger. Leptin comes from fat, the more fat you
have the more leptin you secrete and the less hungry you feel.

Ghrelin is the hunger hormone and its secreted in anticipation of food. As you fast ghrelin goes down because there’s no food coming in.