Scientists Link Night Light to Sleep and Mental Health as 99% in US, Europe Lose Dark Skies
Updated
Updated · spacedaily.com · Aug 19
Scientists Link Night Light to Sleep and Mental Health as 99% in US, Europe Lose Dark Skies
3 articles · Updated · spacedaily.com · Aug 19
Summary
Population studies are increasingly treating artificial light at night as a health exposure, linking brighter outdoor nighttime environments with worse sleep and poorer mental health patterns rather than just lost stargazing.
National Institute of Mental Health researcher Diana Paksarian found a meaningful population-level association between outdoor night light, sleep and mental health in U.S. adolescents, pointing to environmental exposure alongside individual habits.
A 2016 global atlas found 99% of people in the United States and Europe live under skies too bright for real darkness, while about four in five people in North America can no longer see the Milky Way.
Researchers including Christopher Kyba and Richard Stevens argue the issue is a public-health and urban-design problem: cities can provide warm, non-glaring lighting without erasing dark skies and altering human physiology.