[socalgal2]

Well since we're speculating randomly I vote for

* too much rage bait videos raising rage hormones

* too much performing for social media

* suppressing expression for fear of cancellation

* exposure to too many varieties of food/cuisine

* video games

* anime

Yes, these are all tongue-in-cheek but come on, the random speculation here is all ridiculous

[pfdietz]

* Inadequate exposure to UV leading to depressed vitamin D levels.