# A Bright Lamp Before 10 A.M. Linked to More Active Days in Older Adults

*ENLIGHTENme: Translating the Benefits of Self-Administered Daytime Light Supplementation to Older Adults in the Real World.*

- **Evidence Level**: Moderate
- **Publication Types**: Journal Article, Randomized Controlled Trial
- **Journal**: Journal of pineal research
- **Sample Size**: 202 adults aged 63-92 living in three EU cities
- **Authors**: Constantino DB, Baccari F, Caporali L, Carelli V, Amore G, Gordijn M, Haller T, Morgia C, Landvreugd A, Marinelli M, McDaid D, Nõmm M, Nonino F, Romagnoli M, Schettino M, Zenesini C, Bartels M, Skene DJ, van der Veen DR
- **Published**: 2026-09-01
- **Topics**: Light Therapy, Sleep, Circadian Rhythm
- **DOI**: https://doi.org/10.1111/jpi.70174
- **Original Source**: https://pubmed.ncbi.nlm.nih.gov/42685789/

## Summary

Older eyes let in less light, and city apartments are often dim, which can throw off sleep and body clocks. In adults aged 63 to 92 across three European cities, people who got more natural daylight were more active, slept better and had fewer metabolic problems. Those given a bright indoor lamp used it on their own terms, and starting it before 10 a.m. was linked to more daytime activity and steadier rest-activity rhythms. The comparison group got no intervention, so this is early real-world evidence rather than a clean test.

## Practical Takeaway

This study suggests getting bright light early in the morning may support daytime energy in older adults.

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_Canonical: https://longevity-germany.com/en/research/a-bright-lamp-before-10-a-m-linked-to-more-active-days-in-older-adults · Part of Longevity Cities · Updated 2026-09-01_