In total transparency it's one of these fact people in my circle into getting PhDs and reading papers bring up consistently so I never looked it up, something about night shifts correlate high as fuck to lower life expectation, something about stress, sun, heart regulation.
I'll look something up just for you once I get to a PC.
Iirc that is only true in the sense that being queer does the same. It isn't anywhere near comparable in severity of course, I've never had a single person rant at me for being awake at 3am, but it's still a constricting society that punishes people for sticking out in big and small ways that causes compounding issues in people.