TMJ causes asthma:
Japanese research has shown that jaw alignment is approximately 80% successful in treating asthma. Hence, jaw orthopedics is a very safe and effective complementary therapy for treating asthma. Perhaps the more important question is whether TMJ causes asthma. There appears to be ample evidence that in fact TMJ is the cause of asthma in the vast majority of cases. Significant jaw dysfunction is present in over 50% of the population, plenty to account for the increasing incidence of asthma.
The suspected mechanism of action is threefold: 1. biomechanical improvement in head, neck, and shoulder posture (which jaw alignment influences); 2. influence on central nervous system control mechanisms of respiration which it is known that the trigeminal nerve has a large influence, and by influencing other peripheral neural pathways through direct association within the brain (effects quantity and quality of mucous secretions)and 3. by way of neuropeptides (substance P, nerve growth factor, calcitonin gene related peptide).
Substance P is known to have an extremely strong effect on smooth muscles. It is known to be one or the major mediators of bronchial constriction. It is known to mediate histamine release from mast cells. The level of Substance P in the body is highly effected by the trigeminal nerve tonicity, hence the ability of bite dysfunction to cause asthma when it is abnormal. Due to multi-generational changes in the human gene pool, bite dysfunction is currently found in a very high percent of the population.