[maceurt]

Depending on how you breathe, your posture, how you sit, if you exercised consistently as a child, etc. your face can look completely different. The greatest example of this is how early humans had significantly larger jaws due to their diet and exercise, while humans today who have almost the exact same facial genes have much smaller jaws.

[nyokodo]

The introduction of the fork in the middle ages caused the development of the overbite. https://www.theatlantic.com/health/archive/2013/01/how-forks...

[est31]

Also: sanitation gave us polio: https://nextnature.net/2014/01/how-modern-sanitation-gave-us...

[est31]

Do you have more reading on that? Especially on the breathing and posture/sitting part.