Your lungs are made up of 150 to 300 million air sacs. If they were spread out flat they would cover an area the size of a tennis court! Unfortunately when a person suffers from asthma the airways to the lungs do not function properly.
There are two things happening when a person has asthma. The first is the airways become restricted due to constriction or tightening of the muscles which hold the airway open. The second is the lining of the airways become inflamed as well as produce extra mucus. Chiropractors work with the nerves of your body that communicate with the muscles holding your airways open as well as with your immune system which is involved in the inflammatory response. When you have a healthy nervous system your body is able to fight off any invaders that trigger the asthma attack. Also by having a full functioning nervous system the signals from the brain to the muscles of the airways are uninterrupted allowing for easy breathing.
Chiropractors generally find nerve pressure in the middle to upper back and occasionally in the neck regions. Great results have been achieved with specific chiropractic adjustments to these areas removing the nerve pressure and allowing the nervous system to function properly and reduce the risk of asthma attacks.