It's almost as his job is super stressful yeah?
I just checked and yeah, at least past few American presidents aged fucking horribly.
Even Bush Junior was a fucking baby when he got into office and walked out as a geriatric.
But it's not just the accelerated body ageing but the spirit too. They start off enthusiastically "yay, I'm the boss!!" and finish "ya nigga, I can't wait to fuck off from this shit".
Moby's posts are a goldmine. Specially the comment section.