Prevention & lipidsCohort study
Objectively measured individual-level daytime vs. night-time light exposure and cardiovascular disease mortality in US adults
- Retrospective cohort study
- population-based
Authors' conclusion
Greater distinctions between daytime and nighttime light exposure were associated with lower cardiovascular disease mortality among U.S. adults.
Study context
- Population
- US adults from NHANES (2011–2014) who wore an accelerometer with a light sensor for a week233 cardiovascular disease (CVD) deaths
- Participants
- 7,607 adults
- Exposure
- Difference between daytime and night-time light exposure time
- Outcome
- CVD mortality
- Follow-up
- Median 6.8 years
Main finding
As reported in the abstract
CVD mortality per 1-hour increment in daytime vs night-time light exposure difference
Hazard ratio
0.88
95% CI 0.78–0.98
per 1-hour increment
HR 0.88 (95% CI 0.78–0.98)
Per 1-hour increment, as printed
Observational data: associations, not effects.
Further findings
Heterogeneity by age or sex
- No evidence of heterogeneity by age or sex
Original publication
Objectively measured individual-level daytime vs. night-time light exposure and cardiovascular disease mortality in US adults. Eur J Prev Cardiol. Published 8 June 2026. doi:10.1093/eurjpc/zwag303
Summarised from the published abstract; every number is checked against it