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Spud study: baked potatoes may help tame Pre-Diabetes

NCT ID NCT06817252

Disease control Sponsor: University of Nevada, Las Vegas 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 looks at whether adding baked potatoes (with skin) to a Mediterranean diet can improve blood sugar control, blood pressure, and cholesterol in adults aged 45-80 with pre-diabetes. Sixty participants will either get diet education alone or education plus pre-prepared baked potatoes for 12 weeks. Researchers will measure changes in HbA1c, fasting glucose, insulin, and other heart health markers.

What this could mean

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

Active substance
baked potato with skin and Mediterranean diet nutrition education
What this could lead to
If it works, this could show that including white potatoes in a healthy diet helps manage blood sugar and reduce heart disease risk in people with pre-diabetes.
What could go wrong
This is a small, early-stage trial (60 people) testing a dietary change, not a drug. Results may not apply to everyone, and the effect may be modest.

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

Apr 2025

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

45 to 80 years

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: * Men and postmenopausal women within the Las Vegas/Henderson NV area * Ages 45-80 years * BMI between 25-40 kg/m2 * HbA1c between 5.7-6.4% * Individuals from different demographic backgrounds (i.e., American Indian or Alaska Native, Caucasians, Asian, Black or African-American, Native Hawaiian, Hispanic, Latino or Pacific Islander) * Individuals who are considered "non-frequent" white potato consumers (\<2 servings of baked potatoes/week) * Individuals from all races, genders, sexual identities, and religions will be included * Individuals must follow certain guidelines, including avoiding new medications during the study or significant changes to lifestyle factors (e.g. beginning to smoke or exercise more or less than usual) Exclusion Criteria: * Individuals with uncontrolled hypertension (≥160/100mmHg), active cancer, asthma, thyroid, kidney, liver, or pancreatic diseases * Individuals who are currently using insulin, on dialysis, changing/adding hypoglycemic, anti-hypertensive, and hypocholesterolemic medication within ≤3 months (or throughout the study) * Individuals participating in weight loss programs or another clinical trial * Individuals who start smoking * Individuals who have unstable metabolic or chronic diseases * Individuals who may have allergies to potatoes * Woman who are currently pregnant, think they may be pregnant, or who is nursing cannot participate (women must be postmenopausal)

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Conditions

The condition(s) this trial relates to.

Body Weight hypertensive disorder prediabetes syndrome

As listed by the trial registrant

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

Anthropometrics: height and weight Arterial stiffness, blood pressure Body composition measurement Dietary quality Glycemic control Hypertension Inflammation biomarkers Lipid profile Prediabetes Waist circumference

How to take part

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

  1. The places running it

    2 sites. 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

  • Department of Kinesiology and Nutrition Sciences

    NOT_YET_RECRUITING

    Las Vegas, Nevada, 89154, United States

  • University of Nevada Las Vegas

    RECRUITING

    Las Vegas, Nevada, 89154, United States

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