Could a simple light fix improve sleep for dementia patients?
NCT ID NCT06595030
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tested whether a special light therapy, used for 6 months, could improve sleep, mood, thinking, and daily behavior in 100 people with Alzheimer's disease or mild cognitive impairment. Participants either received the active light treatment or a placebo light. The goal was to see if the light could reduce sleep problems and help with other symptoms without medication.
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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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101 people
The number who actually took part.
- Started
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Dec 2024
- Finished
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Jan 2026
- 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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55 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 or related dementia with a Montreal Cognitive Assessment score \<25 * Sleep disturbance with a Pittsburgh Sleep Quality Index score ≥5 Exclusion Criteria: * Extensive brain vascular disease, traumatic brain injury, multiple sclerosis, Parkinson's Disease * Obstructing cataracts * Severe macular degeneration * Use of sleep medication * Use of oral melatonin * untreated moderate to severe sleep apnea * Severe restless leg syndrome - Blindness
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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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Icahn School of Medicine at Mount Sinai
Menands, New York, 12204, United States
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Icahn School of Medicine at Mount Sinai
New York, New York, 10029, United States
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