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3w ago

Pre‑Bed Screen Use Disrupts Sleep Through Stress, Stimulation and Dopamine

Limiting phone use in the hour before bed to one simple, low‑stimulation ritual helps the brain shift out of alert mode.

Doomscrolling before bed is linked to higher stress, suppressed melatonin and poorer sleep, yet the people it affects most are often the ones who keep reaching for the phone
To go with Asia-telecom-SMS-technology-Internet by Martin Abbugao This photo, taken on June 21, 2012, shows a person using a mobile phone touch screen keypad to write a text message in Singapore. Text messaging, the humble telecoms service that turned into a global phenomenon, is under threat from free smartphone services and operators need to find alternative revenue streams, analysts say. AFP PHOTO / ROSLAN RAHMAN
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Overview

  • Coverage on July 20 updated longstanding advice by shifting the focus from blue light to the way screen content delivers stress, stimulation and dopamine that keep the brain active at night.
  • Experts say emotional or rewarding content can trigger dopamine and stress responses that make it harder to fall asleep and reduce deep, restorative sleep and REM.
  • Sleep specialists recommend short, repeatable screen‑free habits such as reading a physical book, gentle stretching or yoga, journaling, calming music or a warm bath to cue the body to wind down.
  • Common nighttime saboteurs include alcohol, late caffeine, clock‑watching and heavy late snacks, with alcohol often causing fragmented REM sleep and awakenings later in the night.
  • Behavior change advice emphasizes starting with one small, maintainable habit and keeping regular sleep and wake times, and clinicians should be consulted if problems persist despite these routine changes.