Food shapes speech

A new study, Human sound systems are shaped by post-Neolithic changes in bite configuration
suggests that with humans' change from hunter gathering to farming, our food got softer and our bite and speech changed.

As one commenter pointed out in the New York Times, presumably some sibilants were lost to the world as well.

And on a similar front, how you pronounce the letter R might say a lot about your familial origin. Rhotics.

http://www.bbc.com/culture/story/20190315-what-a-single-sound-says-about-you


Unmasked by your fricative phonemes - One day soon, Siri will be able to distinguish you from your speech patterns.