It’s not just the screen time, but how often you pick a phone that’s hurting your brain

For years, screen time has been treated as the main culprit behind stress caused by smartphones. But new research suggests that we’ve been worrying about the wrong metric.

A study from Aalto University found that frequent, fragmented phone use is the primary driver of information overload and not total screen time.

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So it’s not the hours that matter most, it’s how often you interrupt yourself.

What’s the problem with checking your phone?

Prakhar Khanna / Digital Trends

The study tracked nearly 300 participants over several months, which combined usage data with self-reported mental strain. What stood out during this period wasn’t the heavy usage. Rather, users who constantly pick up their phones for short bursts reported higher levels of overload.

This kind of behavior that involves quick checks, app switching, and short interactions, creates a pattern