Carbs themselves make most people hungrier, because humans evolved an instinct to load up on fruit calories during the limited window that fruit was in season,

Carbs themselves make most people hungrier, because humans evolved an instinct to load up on fruit calories during the limited window that fruit was in season, so that they could make it through the subsequent winter when food was more scarce. Probably also has to do with the fact that bread has so little actual nutrition. The body isn't getting what it needs, so it prompts you to eat more.