This article describes the background to BBT
and the physiology behind it, and reviews the available evidence
for its effectiveness. There is currently no cure
, so treatments are aimed at controlling or relieving symptoms. BBT
is a complementary
therapy that has been found by some to achieve this aim, but without any evidence
of change in objective lung
function measures, or
. Classical Buteyko theory proposes that changes in carbon dioxide are the
mechanism behind any effect
, so it is perhaps surprising that only one study, of the four controlled trials published in full, included measures of carbon dioxide levels. Further work is needed
to confirm or refute the idea that altering breathing patterns can really have a significant effect
on this parameter.
Despite many enthusiastic proponents of the value of Buteyko, further research is also necessary to establish equivocally whether BBT
is effective, and if so, how it may work.