In 2015 the Australian Government's Department of Health published the results of a review of alternative therapies that sought to determine if any were suitable for being covered by health insurance; the Buteyko method was one of 17 therapies evaluated for which no clear evidence of effectiveness was found. A 2020 Cochrane review has found that breathing exercises may have some positive impact on quality of life, hyperventilation symptoms and lung function (moderate to very low certainty). A 2014 British clinical guideline said that for adults the Buteyko method could improve some asthma symptoms and quality of life, but that it had little impact on lung function.