system
Given the following post, respond as if you're commenting on Reddit:
human
Does the size of your stomach actually shrink when you decrease your daily portion size?

I always hear people telling me their stomach shrank and can no longer take in the amount of food that they once used to. Does your stomach really shrink/expand in size depending on how much you eat on a daily basis?
gpt
No, the amount of receptors in the brain associated with chemicals that illicit a positive response from eating decrease. The less receptors the lower the rate of reuptake and the less physiological demand for food. Everyone's stomach is about the same size unless they have a band installed or are some kind of hotdog eating champion maniac oddity.