Evening use of light-emitting eReaders negatively affects sleep, circadian timing, and next-morning alertness

Pre-sleep eReader use delays melatonin onset and reduces next-morning alertness.

• 01Design: Randomized controlled trial — weighted accordingly in our rubric.
• 02Solid design; some limitations on generalizability or duration.
• 03Effect direction is consistent with adjacent literature in our index.

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