India, March 3 -- Teens today are sleeping less than ever and it's becoming a serious problem. Not getting enough sleep isn't just about feeling tired in class. For teenagers, it's been linked to depression, anxiety, poor concentration, mood swings and even long-term health risks later in life. While smartphones are often blamed for keeping teens up at night, new research suggests the problem goes far beyond screen time. (Also read: Psychotherapist shares how Gen Z employees are using 'breakup' and 'burnout' leaves to prioritise mental health at work )

A new study published in JAMA on 2 March 2026 analysed 16 years of data and found a sharp rise in severe sleep deprivation among adolescents. In 2007, about 69 percent of students weren't ...