system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Trek] how can a star fleet officer be fat?

Would it not be against Star Fleet regulations? Also wouldn’t the replicator provide all the nutritional requirements without a the excess calories etc?
gpt
I think this is covered by the famous "how is Captain Picard bald?" Story:

Executive: why is picard bald? Wouldn’t there be a cure for baldness in the future?

Roddenberry: In the future, people will realise it doesn’t matter

Fatness would be the same way.  Yes there are some health issues associated with being overweight in the 20th century, but by the Star Trek era a ship's doctor can diagnose and treat guy-turned-into-a-doll syndrome.  There's no reason to think being fat is a real issue.