Agriculture has reshaped human pronunciation

  When human beings engaged in agriculture and sowed the seeds of civilization, they did not expect that they also reshaped their spoken pronunciation. A study has shown that changes in dietary structure have changed the teeth and upper and lower jaws of our ancestors, and this physiological change has led to the creation of new voices – nowadays, this new voice exists in most languages ​​of the world. in.
  As early as more than 30 years ago, a linguist noticed that in societies that eat soft foods (such as cooked starchy foods), some pronunciations called lip tones, such as “f” and “v”, More common. Now a research team in Switzerland found that: at the earliest, the upper and lower incisors of ancient human adults were aligned, which made it difficult for them to make lip-toothed sounds; later the jaws became a “overbite” structure, that is, the teeth of the upper jaw slightly protruded forward. Partially covering the teeth of the lower jaw; the overlapping structure of the upper and lower jaws makes it easier to make the lips and teeth.
  How is this physiological change in the jaw produced? Studies have shown that this is related to the emergence of agriculture in the Neolithic Age. After the emergence of agriculture, starchy foods began to become a staple food for humans. Cooked starchy foods are easier to chew, and the work of the jaws is greatly reduced compared to the bite and tearing of the animal’s flesh. Over time, the structure of the jaw has changed.
  An analysis of a language database also confirmed that the language has undergone global changes since the Neolithic Age, especially in the past millennium, the use of “f” and “v” has risen sharply. But in societies that still live in hunting-collecting life, these lips and teeth do not appear.
  It seems that some of the human pronunciation will appear or disappear with the evolution of the body.