system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How does accutane exactly work, what does it do with the body system, and why do results vary from person to person?
gpt
The Accutane molecule is similar in shape to Vitamin A. It stops sebaceous glands from working. Think of it as turning off the faucet that pumps the gunk into the acne. It doesn't work for everyone because it doesn't work for every time of acne. It works best for the big nodular acne, because that is mostly caused by overproduction from sebaceous glands. Other types of acne have different causes.

I don't quite understand what you mean by it affecting the body system.

I hope this helps.