Genetics, lack of breast feeding, soft foods, etc probably influence poor jaw development. Also mouth breathing due to allergies and nasal blockages, bad tongue

Genetics, lack of breast feeding, soft foods, etc probably influence poor jaw development. Also mouth breathing due to allergies and nasal blockages, bad tongue placement, probably other factors. My snoring improved a lot in adult years when I learned to keep my mouth closed and breath through my nose. My tongue position was so bad that an ent suggested tongue ablation, but instead I learned to deliberately thrust my tongue against my palate so it doesn't collapse back. It's difficult because in childhood I basically learned to mouth breathe because my nose was always blocked. That probably caused a lot of my problems with cavities and poor jaw growth. I was also bottle fed mushy foods for the first few years, instead of having more solid foods. I did use a night palatal expander as a kid, but wasn't too consistent in turning the key and my parents weren't really persistent with it.