hi there! a useful site for information would be british lung
foundation, they are also quiet helpful in posting out information
which you could put in your portfolio of evidence.let me know how u get
on!

Maybe the following remarks will also lead you to questioning the
exclusive role of asthma medication.

Asthma seems to be based on a popular and cultural misunderstanding
about breathing, namely that restricting airflow, for example by
reducing the lumen of nasal air passages, actually hinders rather than
promotes lung inflation.  When people  take a deep breath with a
feeling of airflow in the nose, they think the deep breath is
"despite" rather than "due to" the nose resistance. Normally
people just open their mouths wide for intense exercise without
thinking that there is any relationship or law at all between the
degree of opening and lung performance. For more on the popular error
side, see posting entitled "letter to a professor.."

Furthermore it seems to be the object of mainstream medicine generally
to enable patients to breathe freely and not provide theoretical
instruction.

Generally medication is used to overcome abnormal lung airway narrowing
as an exclusive remedy.

Since the use of such medication has been accompanied by an unexplained
increase in asthma morbidity and mortality, it is obvious to consider
the unloading effect of medication on inspiratory muscles weakening
them and causing such increase.

Examples of methods for improving breathing by airway restriction are:
1)    ujjayi in pranayama
2)    Daoist breathing in some qigong
(http://www.lrz-muenchen.de/~s3e0101/webserver/webdata/MantakChia030206.pdf
some pages from "Tan Tien Chi Kung" by Mantak Chia ISBN 0-89281-195-1)
3)    exposure to sulfurous fumes in Italy (Campi Flegrei near Naples) to
treat asthma.

Since ongoing asthma research (Gwen Skloot and others) pin points the
failure of asthmatics to take a deep breath as a cardinal disease
feature, humanity demands that non-drug methods be considered in view
of the abundant material thereon..

I contend that if an asthmatic learns to apply more negative pressure
when inhaling into the upper chest this will given time reduce the
feeling of breathlessness as the key symptom.  Naturally supervision by
an MD would be required.  Regards, Richard Friedel