Depression is a mood disorder characterized by ongoing sadness and loss of interest in activities you previously enjoyed.
Approximately 8.3 percent of U.S. adults experienced at least one major depressive episode in 2021. Remarkably, that rate more than tripled during the COVID-19 pandemic among participants of one study; the prevalence of depression increased to approximately 27.8 percent of U.S. adults by mid-April 2020.





