
Teens’ pre-bed smartphone scrolling drives more late-night phone use, disrupting sleep and potentially worsening mental health—experts urge bedtime screen limits and device-free bedrooms.

Dr Mathew is a senior post-doctoral associate in public health at the Renaissance School of Medicine at Stony Brook University in Stony Brook, New York.

Teens’ pre-bed smartphone scrolling drives more late-night phone use, disrupting sleep and potentially worsening mental health—experts urge bedtime screen limits and device-free bedrooms.