 The study estimates the global burden of asthma in adults using data from the World Health Survey and finds that the prevalence varies greatly among countries, with Australia having the highest rates. The study also highlights the high prevalence of smoking among those with clinical-treated asthma as a major barrier to combating the global burden of asthma. This article was authored by Tatarasa, Stanojevic Sanja, Morse Jeanette, and others.