The U.S. is no longer one of the 20 happiest countries. If you’re young, you probably know why.

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NBC News

“We had picked up in recent years from scattered sources of data that child and youth well-being, particularly so in the United States, had seen a drop,” said Jan-Emmanuel De Neve, professor of economics and behavioral science at Oxford, who is one of the editors of the report. “That has pushed us for the first time to really slice and dice the data by these age categories, which we normally don’t do.”