The vast majority of cases are entirely driven by environmental factors and you can reverse improper development. The most important factors are oral posture, swallowing and chewing. Here are the sources:
https://www.urmc.rochester.edu/news/story/facial-aging-is-more-than-skin-deep
https://sci-hub.se/https://doi.org/10.1177%2F0974909820100115
https://www.patreon.com/posts/24534404
>Jaws: The Story of a Hidden Epidemic.
>Breath: The New Science of a Lost Art.
https://www.urmc.rochester.edu/news/story/facial-aging-is-more-than-skin-deep
https://sci-hub.se/https://doi.org/10.1177%2F0974909820100115
https://www.patreon.com/posts/24534404
>Jaws: The Story of a Hidden Epidemic.
>Breath: The New Science of a Lost Art.