According to the article, you’ll lose so much weight that you need euthanasia if you stop taking NAC - but only if you’re also a mice that also happens to be genetically modified to not produce any Cysteine biologically. Oh, and you shouldn’t eat anything containing cysteine naturally.

Gotcha. So basically I’m going to be fat no matter what, you’re saying.

Another linked article suggests that NAC administration if anything causes weight loss, and has a lot of opposite effects as cysteine. I don't think they're interchangeable.

Interesting. I missed that.

If only there were NAC that doesn't stink opening the bottle.