Humans Have an Internal Lunar Clock – but Light Pollution Is Disrupting It

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zeristor

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Circadian RhythmsLight PollutionLunar Cycle

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Circadian Rhythms

Light Pollution

Lunar Cycle

Research suggests humans have an internal lunar clock that is disrupted by light pollution, with potential implications for our health and behavior.

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01Story posted
Oct 26, 2025 at 3:25 AM EDT
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ggm-at-algebras

3 months ago

> Before around 2010 – when LED lighting and smartphone use became widespread – many women’s menstrual cycles tended to begin around the full Moon or new Moon phases. Afterwards, that synchrony largely vanished, persisting only in January, when the Moon-Sun-Earth gravitational effects are strongest.[0]

Usually I just pass by the refs but this time I felt moved to read.

[0] https://www.tandfonline.com/doi/abs/10.1080/09291016.2013.83...

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ID: 45709780Type: storyLast synced: 11/17/2025, 8:04:13 AM

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