A noticeably slimmed-down Elon Musk joked about his weight loss after he was photographed dressed up as Old Saint Nick.

Elon Musk showed off a trimmer figure in a holiday social media post on Wednesday while revealing that he has been taking an anti-obesity drug to shed pounds. Why it matters: Musk's post highlighted just how mainstream weight-loss drugs like Ozempic and Wegovy have become in recent years as public figures openly admit to using them,