system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: if fat is the way energy is stored in our bodies, does this mean that a person with a higher fat percentage could go longer without eating than a person with a low fat percentage?
gpt
All things being equal, for the most part, yes.

However, when you go without eating, it is not just calories you are missing out on, there are other essential nutrients which are not stored in our bodies.  The fat person would eventually suffer from deficiencies in those, and could still die while they had plenty of calories stored away.