Natural treatment of asthma is obviously the best way. The book Close Your Mouth and ABC to be asthma free are self help books to teach yourself the Buteykjo clinic method. They are available from http://www.amazon.com
for USA and amazon.co.uk for UK and other countries. The Buteyko method is proven, safe and very effective. There is no other
complimentary therapy that gets the results that this gets. I suggest you to visit http://www.asthmacare.ie
It advocates nasal breathing, diet, correct exercise etc. Patrick McKeown is a renowned practitioner. He is one of a few people in the world to be accredited by the Late Professor Buteyko and his clinics are the highly
effective.
Hope this helps.