Final answer:
Around 70-80% of people with an anxiety disorder also experience another anxiety disorder or depression. Anxiety disorders are common in the U.S., with mood disorders like depression and bipolar disorder also having a significant impact on the population.
Step-by-step explanation:
Approximately 70-80% of people diagnosed with an anxiety disorder are comorbid for another anxiety disorder or for depression.
The prevalence of anxiety disorders in the United States suggests that they are highly common, affecting nearly 18 percent of U.S. adults annually and 28 percent over their lifetime.
It's critical to differentiate between general anxiety, which is a normal response to stress, and anxiety disorders, which persist and can include conditions such as OCD, PTSD, panic disorders, and social and specific phobias.
Moreover, mood disorders such as depression and bipolar disorder are also prevalent, impacting around 10 percent of U.S. adults yearly, with a lifetime impact on 21 percent.