system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5 : Why do we get irritable when hungry ?
gpt
It has something to do with blood-glucose levels. When you go a long time without food the blood-glucose levels sink and your brain perceives it as life threatening. Also when your blood-glucose levels are low, the body will send out hormones to try to increase glucose levels. Those hormones can also make you feel stressed.