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Could skipping Late-Night snacks slow Alzheimer's? new trial investigates

NCT ID NCT06548191

Symptom relief Sponsor: University of California, San Diego Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Jun 27, 2026

Summary

This study tests whether restricting eating to a 10-hour daytime window (fasting 14 hours overnight) can reduce sleep problems and cognitive decline in people with mild cognitive impairment or early-to-moderate Alzheimer's disease. Sixty older adults will try the diet for 3 or 6 months, keeping a diary and wearing an activity tracker. The main goal is to see if this approach is feasible and acceptable for this group.

What this could mean

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

Active substance
time-restricted eating (14-hour nightly fasting)
What this could lead to
If it works, this could point toward a simple lifestyle change to help manage symptoms and slow cognitive decline in Alzheimer's disease.
What could go wrong
This is a small early-phase trial testing feasibility, not effectiveness. The intervention may be hard for older adults to follow, and any benefits may be modest or not confirmed in larger studies.

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

Phase 1

The first testing in people. Mainly checks safety and dose, usually in a small group.

Participants

About 60 people

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

Started

Apr 2025

Expected to finish

Jun 2027

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

60 years and older

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

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.

Provision of signed and dated informed consent form. Stated willingness to comply with all study procedures and availability for the duration of the study. Inclusion criteria 1. Persons, aged ≥60 years 2. In good general health as evidenced by medical history or diagnosed with clinical diagnosis of MCI/AD: meeting research consensus criteria for probable MCI or dementia due to AD, requiring positive amyloid biomarkers in brain or cerebrospinal fluid (CSF) obtained at their regular point of care or study referral no longer than 3 months prior to screening. 3. Ability and willingness to complete cognitive evaluations, blood draw, actigraphy monitoring and to record fasting times daily. 4. Daily night fasting \<12h at baseline. Ability and willingness to follow an eating protocol of prolonged night fasting for 14 h 5. For cognitively normal living partners in the dyads group, scores \>26 in the Montreal Cognitive Assessment (MoCA) test administered at screening. Exclusion Criteria: 1. Clinical diagnosis with a neurodegenerative condition other than MCI/AD. 2. Presenting cognitive impairment not due to AD. 3. Clinical diagnoses of diabetes. 4. Actively using insulin in the past 6 months. 5. Started a new medication (or changed doses) indicated for the treatment of MCI/AD in the last three months prior to enrollment. 6. Currently taking any medication known to affect appetite, inlcuding but not limited to GLP-1 agonists. 7. Any history of disordered eating, including difficulty swallowing and refusal to eat. 8. Currently engaged in shift work. 9. In treatment with another investigational drug. 10. Body Mass Index (BMI) \<20. or \>35

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Conditions

The condition(s) this trial relates to.

Alzheimer disease Cognitive Dysfunction Intermittent Fasting

As listed by the trial registrant

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

Alzheimer disease Alzheimer's disease Mild cognitive impairment

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Shiley Marcos Alzheimer's Disease Center

    RECRUITING

    San Diego, California, 92093, United States

More trials for these conditions

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