You can try to see if lspci
sees the USB controller. Next I would try running diagnostics from UEFI, see if you get any errors. Try a bootable USB to verify if it’s a hardware or software issue.
Any hardware diagnostic failure or failure to boot from it will tell you you need a new system board.
It’s a happy accident. They were working on a diabetes treatment, which they did develop. The side effects included weight loss, so it started to get prescribed off-label for that. Then they did the required testing to get it approval for weight-loss.
It works because it is a fake hormone that mimics GLP-1, a hormone that is involved with appetite regulation. When it binds to the GLP-1 receptors it causes more insulin to be released in response to sugars which lowers blood sugars. The weight loss doesn’t come from that, though, it comes from the appetite suppression.
A lot of people seem to think you can eat as much as you want while you’re taking it. That’s technically true, but really because you won’t want to eat much.