Teenage girls are experiencing a marked rise in mental health problems, according to a new survey comparing two periods nearly two decades apart. In the first survey period (2007–2008), around 10% of girls scored above the threshold for clinically significant mental health issues. In the second period (2024–2025), that share had climbed to roughly 30% — approximately three times higher.
The findings highlight a growing gender gap, as the increase was sharper for girls than for boys. However, the source does not give specific figures for boys, so the exact size of that gap remains unclear. The data underscore a broader trend of worsening adolescent mental health, with girls appearing to bear a disproportionate burden.