"we never used to have all these women in their 30s suddenly getting diagnosed with ADHD"
listen, I wouldn't have even noticed I have ADHD if I lived in an era where my doctor could ask if I want to lose 5lbs and then hand me enough amphetamines to see the face of God
My father used to smoke and drink coffee all day. When he quit smoking he dramatically upped his coffee intake. (Probably has ADHD, one of his younger brothers almost certainly did but unfortunately self-medicated with speed & meth and is now deceased.) I myself used to drink several pots of tea 1/2
I'm pretty sure it's 100% how I managed to be not useless from 15-29. I didn't really think about it before, but definitely struggled more with every day shit _after_ I quit smoking until I was finally dx & medicated at 36.