rdgddxx

mouth breathing while growing up deforms people's mouths, jaws, faces
if you want your babies to grow with perfectly developed faces, make sure they avoid mouth breathing while growing up

https://pubmed.ncbi.nlm.nih.gov/20129889/#:~:text=Children%20whose%20mouth%20breathing%20is,or%20Class%20III%20facial%20profiles.

2 dentists i studied with told me most cases of mouth breathing are caused by milk, i think is logical

another thing society do is using shoes with narrow toe boxes
if you use a shoe that twist your big toe, across the years & decades is gonna perpetually deform your big toe in more or less degree
also humans are designed to be barefoot by nature in tropical places like the rest of animals