system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: why do some people with depression lose their appetite and not eat much, while others eat more than usual?
gpt
Depression causes you to feel sad or numb. Eating can give you a feeling of being "happy", but it's very short lived. We have a term for it - "comfort food". So people eat more, and generally unhealthy food.

Or, depression can make you uninterested in normal activities, like eating. It just takes too much effort to make a meal and consume it.

I've experienced both.