system
Given the following post, respond as if you're commenting on Reddit:
human
I eat some of the hottest hot sauces and extracts in the world. Why does my mouth build a tolerance but my stomach doesn't? And why does it hurt more than the stringer acid in my stomach?
gpt
The spiciness of peppers isn't because they contain acids, it's the capsaicin.  Capsaicin mimics the chemical messages your cells release when they detect heat, making your body *think* you are being burned, when in fact you aren't.  Despite the fact that you are NOT being burned, your body doesn't know the difference and reacts as if it is.  Although your mouth and tongue can take it (they are the organs least sensitive to heat), the rest of your body suffers more.