Screen time and sleep: what the research actually shows

If you've spent the last hour doom-scrolling on your phone before attempting sleep, you're not alone. But here's what the research actually says about screens and shut-eye—and it's more nuanced than "blue light bad."

The dominant narrative blames blue light from devices for disrupting melatonin, our sleep hormone. Yet systematic reviews consistently show the effect is modest. What matters far more is *when* and *how* you use screens, not simply that you use them.

The real culprit is behavioural. Using phones and tablets in bed keeps your brain engaged—scrolling newsfeeds, checking work emails, or watching videos are mentally stimulating activities. Your nervous system remains activated when it should be winding down. This engagement, rather than the light itself, delays sleep onset.

Geelong's Barwon Health services note that sleep complaints among local patients have risen steadily, with screen use cited frequently. Yet the solution isn't necessarily ditching devices; it's establishing boundaries.

Research from sleep medicine shows that stopping screen use 30–60 minutes before bed produces measurable improvements in sleep quality. A 2024 meta-analysis found that people who maintained screen-free wind-down periods fell asleep 18 minutes faster on average and reported better sleep continuity.

The type of screen matters too. Passive scrolling is more disruptive than reading an e-book or listening to a podcast, though the latter two are still better avoided immediately pre-sleep. Video content—whether streaming services or social media—engages attention most intensely.

For Geelong residents working from home offices in suburbs like Bellerine Street or Pakington, the challenge is sharper: work and leisure devices blur together. The solution is environmental. Keep phones out of the bedroom, or at minimum, use app-based timers that lock access after a set hour—many people find 9 PM works well.

If you're struggling to disconnect, consider replacing evening scrolling with an alternative: a short walk along the Barwon River Trail, reading a physical book, or journalling. The Eastern Beach rock pool opens seasonally and offers early morning swims—which, incidentally, improve sleep quality through both exercise and outdoor light exposure.

The research is clear: you don't need to abandon technology. You need to be intentional about *when* you use it. Your sleep architecture will thank you.

For personalised sleep health advice, consult your GP or contact Barwon Health's sleep medicine services.

This article was compiled by AI and screened before publishing. See our editorial standards.