> The Buteyko method is not widely supported in the medical community, in part due to the lack of research supporting the theory that hyperventilation and hypocapnia causes disease,[7] with one review noting the absence of convincing evidence to indicate that trying to change asthmatics' carbon dioxide level is either "desirable or achievable."

The comment about it being neither desirable nor achievable is so funny to me! It really walks the line between complete dismissal and polite confusion.