Average height has been slowly increasing overtime, but interestingly if you deep dive in the date white people and black people in the west are staying about the same height wise.
I think the reason average height seems to be going up is that asians and other races that move west are just getting better nutrition so theyre catching up
I think the reason average height seems to be going up is that asians and other races that move west are just getting better nutrition so theyre catching up