Calorie showdown: fixed vs variable dieting for weight loss

NCT ID NCT02736669

Completed Disease control Sponsor: University of Alabama at Birmingham Source: ClinicalTrials.gov ↗

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tested two weight loss programs in 223 overweight or obese adults aged 21-75. One group followed a fixed calorie reduction plan, while the other varied their calorie intake. The goal was to see which approach leads to more weight loss over time.

What this could mean

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

Active substance: calorie reduction (behavioral intervention)
What this could lead to: If it works, this could show which calorie-cutting approach is more effective for weight loss in behavioral programs.
What could go wrong: This is a completed study, but results may not apply to everyone. Weight loss can be hard to maintain long-term.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

Behavior Body Weight Obesity obesity disorder Overweight Weight Loss

As listed by the trial registrant

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

OBESITY OVERWEIGHT

Contacts and locations

Locations

University of Alabama at Birmingham, Medical Towers Building

Birmingham, Alabama, 35205, United States

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