And I used LLMs for months and didn't get massively depressed.

Conversely, at a previous job I was forced to code in Go, became massively depressed, and am still not over it.

I guess my point is that n=1 isn't enough to really know if it's that LLMs got to you, or if you were already on the verge of burnout or depression anyway.

I'd say "we'll see", except in reality there's very few robust studies on depression in cohorts like "developers", so probably the stats won't come out.

I personally recommend doing more of whatever sport it is you like (or if you don't have one, starting running and/or lifting at the gym), and using less social media.