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Starch to the rescue? new study tests diet hack for brain health

NCT ID NCT07152483

Disease control Sponsor: Second Affiliated Hospital, School of Medicine, Zhejiang University 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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Jun 26, 2026

Summary

This study tests whether eating foods high in resistant starch (a type of fiber) can slow down memory and thinking problems in people who have a high genetic risk for cognitive decline. Seventy adults aged 40 and older with obesity or large waistlines will eat either high-resistant starch foods or regular starch foods for a period. Researchers will track changes in thinking skills, blood and gut health markers, and brain scans to see if the diet 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
high-resistant starch staple foods
What this could lead to
If it works, this could point toward a simple dietary approach to help slow cognitive decline in people at high genetic risk.
What could go wrong
This is a small, early-stage trial with only 70 participants. It tests a dietary supplement, not a drug, so the effect may be modest or not detectable. The results may not apply to everyone.

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 70 people

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

Expected to start

Sep 2025

An estimate. Start dates often move.

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

40 years and older

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: * Patients aged ≥ 40 years * meta-polygenic risk score (metaPRS) \> 0.4 * Montreal Cognitive Assessment (MoCA) score ≤ 26 * Central obesity (waist circumference \> 90 cm in males or \> 80 cm in females) or body mass index (BMI) ≥ 28 kg/m² * Written informed consent available * Proficient in using smartphones * Willingness to complete all assessments and participate in follow-up Exclusion Criteria: * Known hypersensitivity or allergy to resistant starch * previously diagnosed dementia * Suspected dementia after clinical assessment by study physician at screening visit * Previous history of major head trauma and any intracranial surgery * Intracranial abnormalities, such as intracerebral hemorrhage, subarachnoid hemorrhage and other space occupying lesions * Extrapyramidal symptoms or mental illness which may affect neuropsychological measurement * Severe loss of vision, hearing, or communicative ability * Patients presenting a malignant disease with life expectancy \< 3 years * Participation in an ongoing investigational drug study * The participant or a first-degree relative is currently participating in another clinical trial involving nutritional intervention. Exit Criteria: * Not meet the inclusion criteria * For any poor adherence, not comply with the requirements of the follow-up, or safety reasons determined by investigator * Any adverse or serious adverse events during the study period judged by Investigator

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Conditions

The condition(s) this trial relates to.

Cognitive Dysfunction Obesity obesity disorder Overweight

As listed by the trial registrant

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

Cognitive decline Cognitive impairment Diet interventions Genetic risk factors Obesity &amp; overweight

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

  • Second Affilated Hospital of Zhejiang University, School of Medicine

    Hangzhou, Zhejiang, 310009, China

More trials for these conditions

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