There’s something else interesting going on.
Puberty suppression drugs are becoming more widely prescribed as the onset of puberty in both boys and girls has become significantly earlier in a what is historically very short period of time.
There are also significant differences in hight gain, visible here in Thailand were teenagers are commonly head and shoulders taller than their parents, a generational change.
These are society wide changes across multiple populations and epidemiology 101; when society wide health changes are seen, look for society wide causes.
I wonder if the dysmorphia and other related psychological difficulties children are increasingly exhibiting are anything to do with this generational change in children developing adult bodies way earlier than brain and emotional development?