Greater numbers of Americans are depressed today than a decade ago, and the increase has been especially striking among adolescents, according to a study published online this week in the journal Psychological Medicine.

Depression rose by almost 1 percent among the general U.S. population between 2005 and 2015, but it climbed by 4 percent among young people aged 12 to 17, the study found.

“Depression appears to be increasing among Americans overall, and especially among youth,” said Renee Goodwin, the study’s senior author and an epidemiologist at Columbia University, in a released statement. “Because depression impacts a significant percentage of the U.S. population and has serious individual and societal consequences, it is important to understand whether and how the prevalence of depression has changed over time so that trends can inform public health and outreach efforts.”

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