We explain this comprehensive topic on the website of my highly specialized, interdisciplinary Breath and Sleep Institute.
Without adequate therapy, nasal obstruction with mouth breathing leads to serious health problems
You should breathe through your nose 24 hours a day except when speaking, eating, drinking and a few other things
During the first decade of life, facial and jaw deformities can occur, as well as ear, speech and swallowing disorders, ADHD and much more
A variety of illnesses can be the subsequent result (e.g., sleep apnoea, chronic snoring, heartburn, heart attack, high blood pressure, chronic fatigue, facial/neck/jaw pain, etc.)