Since the introduction of berries I've noticed I don't really need food that much anymore. I can eat one berry a day usually, and bring my nutrition level up to "slightly fed". I'm thinking there should be a nutrition gauge with a threshold that must be met for you to receive the bonuses or restrictions of each moodle. The gauge should be visible to the player, because when you're hungry, you usually know it. Cigarettes could also play into the game more. They could be used as an appetite suppressant.