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Protein vs. carbs: which drink tricks your brain into eating less?

NCT ID NCT06752967

Knowledge-focused Sponsor: Steno Diabetes Center Copenhagen 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Aug 20, 2026 · Updated 3 times

Summary

This study looks at how a high-protein drink versus a high-carbohydrate drink influences what people choose to eat afterward. Researchers will test 45 adults with normal weight, overweight, or obesity to see if the type of meal changes their 'food memory' and calorie intake. The goal is to understand why some meals make us crave sweets or fats, which could help design better diets for weight control.

What this could mean

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

Active substance
High protein liquid test meal; High carbohydrate liquid test meal
What this could lead to
If successful, this could help explain why some meals make us crave certain foods, potentially guiding future weight management strategies.
What could go wrong
This is a small, early-stage observational study (45 participants) that measures short-term effects only. Results may not apply to real-world eating habits or lead directly to treatments.

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

47 people

The number who actually took part.

Started

Dec 2024

Finished

Jun 2026

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 45 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 18-45 years * For women: Regular menstruation * BMI-range 18.5-39.9 kg/m\^2 Exclusion Criteria: * Not able or willing to eat or drink the test meals because of e.g., allergy or intolerance * Daily smoking * For women: Pregnancy / planned pregnancy (within the study period) / lactating * Self-reported history of an eating disorder * Self-reported weight change (kg) within two months prior to inclusion * HbA1c ≥48 mmol/mol * Treatment with antidepressants * Alcohol/drug abuse or in treatment with disulfiram (antabus) at time of inclusion * Uncontrolled medical issues including but not limited to cardiovascular pulmonary, rheumatologic, hematologic, oncologic, infectious, gastrointestinal, or psychiatric disease; diabetes or other endocrine disease; immunosuppression * Current treatment with medication which significantly affect appetite or energy balance (e.g., GLP-1 receptor agonists) * Bariatric surgery * Unable to understand the informed consent and the study procedures * Concomitant participation in intervention studies * Participant's withdrawal of the informed consent * Other safety concerns - judged by the investigator

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Conditions

The condition(s) this trial relates to.

Food Preferences Obesity obesity disorder Overweight

As listed by the trial registrant

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

Normal weight Obesity Overweight

Contacts and locations

Locations

  • Steno Diabetes Center Copenhagen

    Herlev, Denmark, 2730, Denmark

More trials for these conditions

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