Data indicate the incidence of depressive symptoms in youth increases during adolescence and peaks during young adulthood. Depression affects physiological and social functioning, interpersonal relationships, employment, substance abuse, and indicates a "more dissatisfied life." Young people ages 18-24 living below the poverty line were more likely (8 percent) to report suffering from two or more symptoms of depression in the past 30 days than their peers living at or above poverty (5 percent).