Back to today’s briefing

Story perspectives

Study Links Nighttime Light Exposure to Depression Risk

11/6/2025

33 7

Summary

Story summary

Artificial light at night is linked to higher depression risk among older adults in a study of about 40,000 people aged 50+ across the United States, England, Northern Ireland, and Ireland.
In Northern Ireland, residents in light-polluted regions were nearly 80% more likely to report depression.
Researchers say artificial light at night disrupts circadian rhythms.
Experts urge further research to understand the full mental-health impact.

1 of 1

Story summary

Artificial light at night is linked to higher depression risk among older adults in a study of about 40,000 people aged 50+ across the United States, England, Northern Ireland, and Ireland.
In Northern Ireland, residents in light-polluted regions were nearly 80% more likely to report depression.
Researchers say artificial light at night disrupts circadian rhythms.
Experts urge further research to understand the full mental-health impact.