How prevalent is anxiety?

In addition, according to the World Health Organization (WHO), 1 in 13 suffers from anxiety worldwide. WHO reports that anxiety disorders are the most common mental disorders worldwide, with specific phobia, major depressive disorder and social phobia being the most common anxiety disorders. Anxiety disorders refer to a group of mental disorders characterized by feelings of anxiety and fear, including generalized anxiety disorder (GAD), panic disorder, phobias, social anxiety disorder, obsessive compulsive disorder (OCD), and post-traumatic stress disorder (PTSD).