One short article on the Buteyko technique was published in the Medical Journal of Australia in 1995. The article consists of an exchange of comments between a group of scientists who were invited to observe a series of Buteyko workshops and the Buteyko practitioners who organised them. The article gives positive and negative views of Buteyko. A second study published in 1998 in the same journal also found both positive and negative effects of practising the technique but it was unclear whether the positive results were the result of an actual improvement in the underlying asthma or to the extra support provided by the Buteyko practitioner. However, no studies have been published exploring the long-term effects of the Buteyko technique.
More detailed research is needed.
Hypnosis involves creating a state of decreased general awareness which enables the patient to concentrate exclusively on one thing or idea. Hypnosis has been shown to be beneficial in some cases but it is also known that not everybody is susceptible to hypnosis. Like yoga, it is not certain why hypnosis seems to help certain people. There is evidence that taking Royal Jelly has caused very serious side effects in some people with asthma and other allergies. Although serious side effects from propolis have not been documented in the same way as for Royal Jelly, caution is advised because they are both produced from bees.