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Animal vs. vegetable protein: which helps insulin resistance more during weight loss?

NCT ID NCT03627104

Disease control Sponsor: Instituto Nacional de Ciencias Medicas y Nutricion Salvador Zubiran Source: ClinicalTrials.gov ↗

What the study statuses mean

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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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jul 14, 2026 · Last updated Jul 15, 2026 · Updated 1 time

Summary

This study investigates whether the type of dietary protein (animal or vegetable) and energy restriction can improve insulin resistance in adults with obesity. Over one month, participants follow a controlled diet with either standard or high protein from animal or vegetable sources. The goal is to see which combination best improves insulin sensitivity and body composition.

What this could mean

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

Active substance
Normoprotein diet with animal protein or vegetable protein, combined with energy restriction
What this could lead to
If successful, this could help identify the most effective dietary protein source for improving insulin sensitivity during weight loss in people with obesity.
What could go wrong
This is a small, short-term (1 month) study, so results may not apply broadly or show lasting effects. Dietary adherence can vary, and individual responses may differ.

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

80 people

The number who actually took part.

Started

Sep 2018

Finished

Jan 2020

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

20 to 60 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: * Adults (men and women) between the ages of 18 and 60. * Patients with obesity (BMI ≥ 30 and ≤ 50 kg / m2) and with insulin resistance (HOMA - IR Index ≥ 2.5). * Mexican mestizos (parents and grandparents born in Mexico). * Patients who can read and write. Exclusion Criteria: * Patients with any type of diabetes. * Patients with kidney disease diagnosed by a medical or with creatinine\> 1.3 mg / dL for men and \> 1.1 mg / dL for women and / or BUN\> 20 mg / dL. * Patients with acquired diseases that produce obesity and diabetes secondarily. * Patients who have suffered a cardiovascular event. * Patients with weight loss \> 3 kg in the last 3 months. * Patients with any catabolic diseases. * Gravidity status * Positive smoking * Treatment with any medication

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Conditions

The condition(s) this trial relates to.

Insulin Resistance Obesity obesity disorder

As listed by the trial registrant

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

Insulin resistance Obesity

Contacts and locations

Locations

  • Martha Guevara Cruz

    Mexico City, 14060, Mexico

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