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Spud-tacular study: potatoes may ward off diabetes in seniors

NCT ID NCT07229482

Prevention Sponsor: Virginia Polytechnic Institute and State University Source: ClinicalTrials.gov ↗

What the study statuses mean

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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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Sep 04, 2026 · Updated 6 times

Summary

This study looks at whether a diet rich in whole white potatoes can improve blood sugar control and blood pressure in adults aged 50-70 who are at risk for type 2 diabetes. Participants will eat either a potato-rich healthy diet or a typical Western diet for 12 weeks. Researchers will measure changes in glucose tolerance, insulin sensitivity, and blood pressure to see if potatoes can be part of a heart-healthy eating plan.

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 42 people

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

Started

Aug 2026

Expected to finish

Mar 2029

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

50 to 70 years

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.

Inclusion Criteria: * Age 50-70 years * Weight stable for previous 3 months (±5% body weight) * Sedentary to recreationally active * ADA-Risk Screener questionnaire score of at least 5 * No plans to gain or lose weight or change physical activity level * Willing to pick up food daily and consume foods provided for a 14-week period * Verbal and written informed consent * Estrogen or testosterone use, lipid-lowering or blood pressure medication and thyroid replacement medication is acceptable, if on stable dose for \>6 months Exclusion Criteria: * Body mass index \>40 m2/kg * Diabetes or diabetes medication * Weight loss medication or medication influencing glucose metabolism * Antibiotic, prebiotic or probiotic use in prior 3 months * TCHOL \>6.2 mmol/L; TG \>4.5 mmol/L * Blood pressure (BP) \> 159/99 mmHg * Diagnosed inflammatory bowel disease * Past or current heart diseases, stroke, respiratory disease, endocrine or metabolic disease, or hematological-oncological disease * Vegetarian or vegan * Pregnant or plans to become pregnant * Food allergies or aversions to diet foods provided * Estrogen or testosterone usage, lipid-lowering medication, blood pressure medication usage \<6 months

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Conditions

The condition(s) this trial relates to.

hypertensive disorder type 2 diabetes mellitus prevention target

As listed by the trial registrant

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

Blood pressure Cardiometabolic health T2D

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

  • Virginia Polytechnic Institute and State University

    RECRUITING

    Blacksburg, Virginia, 24061, United States

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