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Timing your meals: early or late, does it matter for weight loss?

NCT ID NCT06018415

Symptom relief Sponsor: First Affiliated Hospital Xi'an Jiaotong University 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 two types of time-restricted eating in 103 overweight adults with metabolic syndrome. One group ate all their food within an early 8-hour window, the other within a late 8-hour window. Researchers measured changes in body weight and belly fat to see which timing worked better.

What this could mean

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

Active substance
time-restricted eating (behavioral intervention)
What this could lead to
If successful, this could show that simply changing when you eat (early or late window) helps with weight loss and reduces belly fat in people with metabolic syndrome.
What could go wrong
This is a small, completed study with 103 participants, so results may not apply to everyone. The effects may be modest and depend on sticking to the eating schedule.

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

103 people

The number who actually took part.

Started

May 2024

Finished

Oct 2024

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 65 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: 1. Age from 18 to 65 years 2. Body mass index (BMI): 24.0-40.0 kg/m2 3. Diagnosed with metabolic syndrome (i.e., more than 3 abnormal findings out of 5): 1. Waist circumference ≥ 90 cm (men) or ≥ 80 cm (women). 2. Elevated triglyceride (TG) (use of lipid-lowering medication is an alternate indicator) ≥ 150 mg/dL (1.7 mmol/L). 3. Reduced high-density lipoprotein cholesterol (HDL-c) (use of lipid-lowering medication is an alternate indicator) \< 40 mg/dL (1.0 mmol/L) in males \< 50 mg/dL (1.3 mmol/L) in females. 4. Elevated blood pressure (use of antihypertensive medication is an alternate indicator). Systolic blood pressure (SBP) ≥ 130 and/or diastolic blood pressure (DBP) ≥ 85 mmHg. 5. Elevated fasting blood glucose (FBG) (used of hypoglycemic medications is an alternate indicator) ≥ 100 mg/dL (5.6 mmol/L). Exclusion Criteria: 1. Unstable weight (change \> 10% current body weight) for 3 months prior to the study 2. Pregnant or breast-feeding 3. Night shift workers 4. History of major diseases or related diseases, such as cancer, inflammatory disease, chronic obstructive pulmonary disease and major adverse cardiovascular event 5. Active viral hepatitis, acquired immune deficiency syndrome, syphilis and other sexually transmitted diseases, tuberculosis and other infectious diseases 6. Being treated with antibiotics or corticosteroids 7. Current participate in other weight-management program, current on a prescribed diet for special disease or current on any drugs that effect appetite 8. The researcher deemed it inappropriate to participate in the experimenter.

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Conditions

The condition(s) this trial relates to.

abdominal obesity-metabolic syndrome Intermittent Fasting metabolic syndrome X Obesity obesity disorder Overweight

As listed by the trial registrant

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

Metabolic syndrome Overweight and obesity Time-restricted eating

Contacts and locations

Locations

  • First Affiliated Hospital of Xi 'an Jiaotong University

    Xi'an, Shaanxi, 710061, China

More trials for these conditions

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