system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do people get so hungry they feel like they're gonna throw up?

Basically what the title says. I'm just lying in bed trying to sleep and I haven't eaten in hours. My stomach is grumbling, but yet I also feel sorta pukey. Why does this happen?
gpt
Someone commented but they may be shadowbanned, just letting them know.

So what a hungry person is feeling is the stomach acid acting on nothing, as your stomach is basically digesting acids. The nausea is caused by your body trying to get rid of the excess acid in the stomach.