Clinical trial · Supplements / medicine · 2 Sept 2026
Boosting indoor light could help support healthy ageing in older adults in urban areas
Source: EurekAlert
What the research found
Study. In the ENLIGHTENme trial (Journal of Pineal Research), University of Surrey researchers led by Débora Constantino and Daan van der Veen recruited 202 community-dwelling adults aged 63–92 in Tartu, Bologna, and Amsterdam. After a two-week wearable baseline, 98 were randomized to three months of a full-spectrum lamp in the most-used room (on within an hour of waking; off four hours before usual sleep) versus 93 controls. Earlier self-administered daytime light tracked with higher activity and less rest–activity fragmentation. This is real-world light hygiene, not a drug and not a sleep-disorder diagnosis. Educational, non-pharmacological notes; not medical advice.
Evidence level: Clinical trial. This is among the stronger kinds of evidence, but one study rarely settles a question.
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