I would say that is due to other circumstances such as sun PLUS a bad diet such as one where you're consuming (a lot of) seedoils.
Discussion
Your milage can vary for sure!
Just don't count on that "sunburns don't matter" part. At a minimum, you have inflammation followed by scar tissue formation just like every pimple or mosquito bite you get. Microscopic, yes, but just like stacking SATs, that inelastic tissue accumulates with time.
Gotta keep those Chad good looks rocking into you 70s : )
Thanks for the warning. If anything I spend too little time in the sun though, I haven't gotten a burn, even a little one, in the last 20 years.