Anxiety disorders are the most common mental illness in the United States, affecting 40 million adults age 18 and older (18 percent of the U.S. population) (ADAA, 2014). The percentage is similar in Australia, with 14.4 percent of Australians being affected by an anxiety disorder in any 12 month period (Mindframe, 2012). Even though only one-third of those in both countries seek treatment for the disorder, anxiety carries a huge disease burden, costing the United States more than $42 billion a year, almost one-third of the country’s total mental health bill (ADAA, 2014). Similarly in Australia, anxiety and depressive disorders are the third leading cause of disability burden, accounting for about 27 percent of the years lost to disability (Mindframe, 2012).
Yet even among the one-third... »