A light switch for better sleep? Alzheimer's trial tests wireless circadian lighting
NCT ID NCT05519137
First seen Jul 30, 2026 · Last updated Jul 31, 2026 · Updated 1 time
Summary
This trial tests whether a tailored lighting intervention, controlled by a wireless device, can improve sleep and mood in people with Alzheimer's disease. Participants receive either active lighting designed to affect the body's internal clock or a control lighting with no intended effect. The study measures sleep quality and depression symptoms to see if the lighting makes a difference.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- a wireless-controlled lighting intervention designed to impact the circadian system
- What this could lead to
- If it works, this could point toward a non-drug way to improve sleep and mood in people with Alzheimer's disease.
- What could go wrong
- This is a very small pilot trial with only 14 participants, so results may not apply widely. The lighting may not produce meaningful changes in sleep or mood.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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14 people
The number who actually took part.
- Started
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Jan 2022
- Finished
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May 2023
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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60 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion criteria: * Diagnosis of Alzheimer's disease with a Mini Mental Score Examination (MMSE) between 0 and 19 * a score \>5 on the PSQI. Exclusion criteria: \- use of sleep medication
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Light and Health Research Center
Menands, New York, 12204, United States
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