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Sunlight therapy shows promise for Alzheimer's sleep problems

NCT ID NCT07386808

Symptom relief Sponsor: National Taiwan University Hospital Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing This study
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 24, 2026 · Last updated Jul 17, 2026 · Updated 2 times

Summary

This study looked at whether sunlight exposure therapy could improve sleep problems in people with Alzheimer's disease. Sixty participants with mild Alzheimer's and sleep issues received a health education plan on sun exposure and were followed for 14 days. The goal was to see if this simple, natural approach could lead to better sleep quality.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
sunlight therapy
What this could lead to
If it works, this could point toward a simple, drug-free way to improve sleep quality in people with Alzheimer's disease.
What could go wrong
This is a small, early observational study with only 60 participants and no control group. Results may not apply to everyone, and the effect might be small or due to other factors.

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

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

About 60 people

The number the study aims to enrol. It can still change while the study runs.

Started

May 2026

Expected to finish

Dec 2026

An estimate. End dates often move.

Lead sponsor

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

Children (under 18), adults (18 to 64) and older adults (65 and over)

Sex

Anyone

Healthy volunteers

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

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: 1. Diagnosed with Alzheimer's disease 2. CDR: 0.5 - 1 point 3. Conscious and able to cooperate with behavioral interventions and telephone interviews 4. Complaints of sleep disturbances, including: daytime sleepiness, difficulty falling asleep, fragmented sleep, nighttime awakening, nocturnal wandering, and sunset syndrome. 5. A cohabiting family member is required as the primary caregiver, who understands and cooperates with this intervention and has signed a consent form. 6. If the patient is already taking sleeping pills, the maintenance dose will not be adjusted. Exclusion Criteria: 1. Individuals with other brain injury conditions, such as cerebral palsy, brain tumors, traumatic brain injury, or stroke. 2. Individuals with visual impairments (assessed by comparing numbers with fingers at a distance of 30 cm upon admission). 3. Institutional residents. 4. Individuals living alone. 5. Individuals unable to cooperate with behavioral interventions and telephone interviews.

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Conditions

The condition(s) this trial relates to.

Alzheimer disease circadian rhythm sleep disorder

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Alzheimer's disease(AD) Sleep disorders, circadian rhythm

Contacts and locations

Locations

  • National Taiwan University Hospital

    Taipei, Taiwan, 100, Taiwan

More trials for these conditions

Other studies related to the condition(s) this trial covers.