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Moonlight

Moonlight has been studied in 1 paper since 2025: 1 observational study in people. The newest paper, Jul 8, 2025: “Winter sleep extension and fragmentation in a South African agropastoral community”.

Exposure

1 paper studies it1 findingUpdated

See all 1

“Greater moon illumination was correlated with shorter Total Sleep Time and reduced Fragmentation Index and Wake After Sleep Onset.”
Winter sleep extension and fragmentation in a South African agropastoral communitySleep health2025doi:10.1016/j.sleh.2025.05.008

C, W, M, H: cells, worms or flies, mice, humans. Dark: independent labs found the same change there. Light: one lab or one study. Outline: nothing yet.

  • 1 lab in 1 country
  • Funders: Natural Sciences and Engineering Research Council and 2 more
  • Humans1

What did studies of Moonlight find?

1

Studies of Moonlight measured 1 outcome; the most studied are sleep duration (1 study).

Sleep duration

downin humans1

1 study

  1. Moonlight is linked with lower sleep duration in humans.

    “Greater moon illumination was correlated with shorter Total Sleep Time and reduced Fragmentation Index and Wake After Sleep Onset.”

    Humansn = 114

    Winter sleep extension and fragmentation in a South African agropastoral community

    Sleep health

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