systematic_review
    2017
    High Quality

    Coffee, caffeine, and sleep: A systematic review of epidemiological studies and randomized controlled trials

    Unknown authors

    Published in Sleep Med Rev

    Key Findings

    Caffeine reliably increases alertness but delays sleep onset and reduces total sleep time when consumed later in the day.

    Conclusions

    Timing determines whether caffeine helps or harms next-day energy.

    Outcomes Measured

    Afternoon Slump Prevention

    Caffeine reliably increases alertness but delays sleep onset and reduces total sleep time when consumed later in the day.

    Study Details

    Year:2017
    Quality Score:8/10

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