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New diet strategy: eat more Low-Cal foods to maintain weight loss

NCT ID NCT01849627

Disease control Sponsor: The University of Tennessee, Knoxville 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
Running, but no longer taking on new participants.
Completed This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 tested whether a diet focused on low-energy-density foods (like fruits, vegetables, and broth-based soups) helps people maintain weight loss better than simply counting calories. 345 adults with obesity were followed for 22 months. Researchers measured changes in weight, diet, and feelings of hunger.

What this could mean

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

Active substance
behavioral intervention: low-energy-density diet
What this could lead to
If successful, this approach could offer a practical, food-based strategy for people to keep weight off after losing it.
What could go wrong
This is a completed behavioral study, so results are already known. Weight maintenance is challenging long-term, and individual results may vary.

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 345 people

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

Started

Aug 2014

Finished

Dec 2025

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

18 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 between 18 and 70 years * Body mass index (BMI) between 27 and 45 kg/m2 Exclusion Criteria: * Report a heart condition, chest pain during periods of activity or rest, or loss of consciousness on the Physical Activity Readiness Questionnaire * Individuals reporting joint problems, prescription medication usage, or other medical conditions that could limit exercise will be required to obtain written physician consent to participate * Report being unable to walk for 2 blocks (1/4 mile) without stopping * Report major psychiatric diseases or organic brain syndromes. * Are currently participating in a weight loss program and/or taking weight loss or appetite regulation medication or lost \> 5% of body weight during the past 6 months * Have had bariatric surgery for weight loss or are planning to have bariatric surgery in the next 22 months * Intend to move outside of the metropolitan area within the time frame of the investigation * Are pregnant, lactating, \< 6 months post-partum, or plan to become pregnant during the investigation * Report not being able to consume meal replacements To participate in the weight loss maintenance phase, participants will need to lose equal to or greater than 8% of their body weight from the baseline measure at the conclusion of the 4-month weight loss phase.

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Conditions

The condition(s) this trial relates to.

Obesity obesity disorder

As listed by the trial registrant

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

Obesity

Contacts and locations

Locations

  • University of Tennessee

    Knoxville, Tennessee, 37996, United States

More trials for these conditions

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