Study Finds No Link Between Screen Time and Poor Sleep

A new Canadian study is challenging one of the most widely held beliefs about sleep — that looking at your phone before bed harms rest.

Researchers from Toronto Metropolitan University and Laval University surveyed more than 1,000 adults about their nighttime device use and found no significant difference in sleep quality between those who used screens and those who didn’t.

The findings suggest that previous studies may have overlooked key demographic factors, particularly age, which can influence how light exposure affects sleep cycles.

Colleen Carney, a sleep specialist involved in the research, noted that earlier studies often generalized results from younger participants to the entire population.

This new evidence may shift the conversation about digital habits and rest, hinting that moderation — not total avoidance — might be the more realistic key to better sleep.