What is the most common mental illness affecting the adult population in the US?

The most common mental illness affecting the adult population in the US is indeed depression. This condition has a significant impact on many individuals, characterized by persistent feelings of sadness, loss of interest, and a decrease in functioning in daily life. Major depressive disorder can affect people’s ability to work, interact socially, and maintain relationships, leading to a substantial burden on both individuals and society as a whole.

Statistically, depression affects millions of adults annually, making it more prevalent than other mental health disorders listed. Whereas anxiety disorders also represent a significant portion of mental health issues, they generally encompass a wide range of conditions including generalized anxiety disorder, panic disorder, and social anxiety disorder, which, while common, do not surpass the prevalence of depression as a singular diagnosis. Schizophrenia, while serious, affects a smaller percentage of the population. ADHD, primarily considered in children and adolescents, tends to have a lesser focus on adult prevalence.

Understanding the widespread nature of depression highlights the importance of mental health awareness and informed strategies for prevention, intervention, and support in populations most affected.