If only there was an answer!!! haha
Something that I was thinking about earlier is that I think in the pasts, artists probably got quite a lot of sunlight because you Need good sunlight for traditional art, and also they did a lot of plein air painting
But for digital art, we're cooped up in our rooms with barely any natural light because sunlight messes with our screens....... It might be time to pick up some vitamin D tablets.....
Just thinking out loud haha