Prevalence of anxiety disorders
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Global Prevalence of Anxiety Disorders
Anxiety disorders are among the most common mental health conditions worldwide, affecting a significant portion of the population. Large-scale studies estimate that the lifetime prevalence of anxiety disorders is approximately 33–34% in the United States and similar rates are reported globally, with up to 301 million people affected as of 2019, representing about 4% of the world’s population Szuhany2022Javaid2023Bandelow2015+1 MORE. The number of people with anxiety disorders has increased by over 50% in the past three decades, although age-standardized rates have remained relatively stable, suggesting that the rise is largely due to population growth and aging Javaid2023Yang2021.
Prevalence by Region and Country
Prevalence rates of anxiety disorders vary by country and region. For example, Portugal, Brazil, Iran, and New Zealand report some of the highest rates, with Portugal reaching 8.7% of the population . In China, pooled lifetime prevalence is lower than in many Western countries, but still significant, with women consistently showing higher rates than men . In Iran, the 12-month prevalence is 15.6%, with higher rates among women, the unemployed, and those with lower socioeconomic status . A study in Tunisia found an overall prevalence of 5.5%, with panic disorder being the most common subtype .
Prevalence in Children and Adolescents
Anxiety disorders are also highly prevalent among children and adolescents. In Spain, the prevalence among early adolescents is 11.8%, with specific phobia and generalized anxiety disorder being the most common subtypes . In Norway, nearly 10% of children had an anxiety disorder at some point between preschool and adolescence, with specific phobia most common in early years and generalized anxiety disorder increasing in adolescence . Girls and those from lower socioeconomic backgrounds are at higher risk Canals2018Steinsbekk2021.
Gender, Age, and Socioeconomic Factors
Women are consistently more likely to experience anxiety disorders than men, with studies showing they are 1.66 times more likely to be affected globally Javaid2023Hajebi2018Guo2016. Prevalence tends to decrease with older age, but middle-aged women, especially those who are married with children, are particularly at risk Bandelow2015Jabeur2022. Urbanization and higher socioeconomic development are associated with increased prevalence, but low socioeconomic status and unemployment are also risk factors Javaid2023Hajebi2018.
Impact of the COVID-19 Pandemic
The COVID-19 pandemic led to a notable increase in anxiety prevalence, with about 35% of adults worldwide experiencing anxiety during this period. This rate was similar across low, middle, and high-income countries . About one in ten cases during the pandemic were classified as severe or extremely severe anxiety disorders .
Common Subtypes and Comorbidity
The most common anxiety disorders include generalized anxiety disorder (lifetime prevalence 6.2%), social anxiety disorder (13%), and panic disorder (5.2%) . Comorbidity with other mental health conditions is high, further increasing the burden and disability associated with anxiety disorders Bandelow2015Hajebi2018Canals2018.
Conclusion
Anxiety disorders are highly prevalent worldwide, affecting about one in three people over their lifetime. Prevalence rates are influenced by gender, age, socioeconomic status, and global events such as the COVID-19 pandemic. Despite their frequency and impact, anxiety disorders remain underrecognized and undertreated, highlighting the need for improved detection, prevention, and access to care Szuhany2022Javaid2023Bandelow2015+1 MORE.
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