Mother tongue and facial expression - is there any connection between them?

[kwp_wp]

I have a question for you.
I have wondered for some time is it possible that besides of our own genetic backgroud also our native language - language the we speak everyday - has real impact on our facial appearance? By native language I mean this language which we have spoken through childhood, which we have learnt since early age. I have seen a lot of people of completely Polish root (Polish father and mother) but because they've grown up in English speaking enviroment and they first language in English they've lost their typical Polish kind of looks in comparison to their parents for example. Especially in the mouth area IMO. I don't know maybe its my vague, personal and consequently biased impression but I have observed this phenomenon in a lot of people who I met during my few visits to USA. Those people were Polish but born in US. Is it possible that the way we learn to pronounce different vowels and consonants influences so much our phenotype that produces visible difference in appearance in adult age? Though it is well known fact that f.i. Germanic languages have different vowels not present in languages from Slavic group
plz feel free to say your opinions and experiences, thanks

[Breedingvariety]

It might have more to do with diet and climate. But it is an interesting idea language has an effect on phenotype.

It is my contention every exposure has an effect. Movement of muscles while talking could shape facial features. Ideas expressed by language in general and cultures specifically shape behavior and feelings. So language isn't exception in causality rationalization game. But in the end, the absurdity of the game lead to holism.

[Agrippa]

Yes, definitely. Whether it is only the mother tongue or other influences too, like the mimic you learn from your surrounding social environment.

[Talvi]

I did hear that ones language somehow influences the position of your jaw! I cant imagine if its true. Like when you speak American English your jaw is somehow positioned differently. So when one is not used to saying certain phonemes in a certain order, its very difficult to do so because your jaw limits you. So I guess it would contribute.

I find it a little fishy though.