Light bulbs might help Alzheimer's patients sleep better and control blood sugar
NCT ID NCT03777722
First seen Oct 31, 2025 · Last updated Jun 22, 2026 · Updated 23 times
Summary
This study tested whether a special type of lighting, called a tailored lighting intervention, could help people with mild to moderate Alzheimer's disease and type 2 diabetes sleep better and improve their metabolism. Sixty-one participants living in assisted living or nursing homes were exposed to either the active lighting or a placebo light for 8 weeks. The goal was to see if the light could reset their internal body clocks, leading to better sleep, mood, and blood sugar control.
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This is a summary of
the original study
.
Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Contacts and locations
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Locations
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Icahn School of Medicine
New York, New York, 10029, United States
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Icahn School of Medicine at Mount Sinai
Albany, New York, 12204, United States
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Rutgers University
New Brunswick, New Jersey, 08854, United States
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
tailored lighting intervention (special light bulbs/fixtures)
What this could lead to
If it works, this could offer a simple, drug-free way to improve sleep and metabolic health in people with Alzheimer's disease.
What could go wrong
This is a small, early-stage study with only 61 participants. The lighting may not work for everyone, and results may not apply to people with severe vision problems or insulin-dependent diabetes.
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.