system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How does starvation kill a human being?
gpt
We need energy and nutrients to survive. We get those things from food. If we stop eating, we run out of energy and nutrients, and our body starts to consume itself. Eventually, even that runs out. Think of it like a car needing gas to run. If the car runs out of gas, the car shuts down, except unlike cars, we can't be turned on again once we're turned off.