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Does when you eat carbs and protein reshape blood sugar control?

NCT ID NCT06382480

Disease control Sponsor: German Institute of Human Nutrition 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 This study
Running, but no longer taking on new participants.
Completed
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Aug 11, 2026 · Last updated Aug 12, 2026 · Updated 1 time

Summary

This pilot trial tests whether the timing of carbohydrates and protein across meals can improve glucose metabolism in people with prediabetes or type 2 diabetes who are overweight or obese. Participants follow two different isocaloric diets—one with a high-protein breakfast and high-carb dinner, the other with a high-carb breakfast and high-protein dinner—to see which better supports 24-hour blood sugar levels and inflammatory status. The goal is to identify a practical dietary pattern that could help prevent or manage type 2 diabetes.

What this could mean

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

Active substance
Two isocaloric diets differing in the distribution of carbohydrates and protein across meals: one with a high-protein breakfast and high-carb dinner, the other with a high-carb breakfast and high-protein dinner.
What this could lead to
If successful, this could point toward a simple, drug-free dietary strategy to help manage blood sugar and inflammation in people with prediabetes and type 2 diabetes.
What could go wrong
This is a small pilot study, so results may not be definitive or apply broadly. The diets are carefully controlled, which may not reflect real-world eating habits.

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 30 people

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

Started

Apr 2024

Expected to finish

Feb 2027

An estimate. End dates often move.

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 75 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: * Prediabetes (fasting blood sugar 100-125 mg/dl) * Diabetes type 2 (fasting blood sugar \>126 mg/dl) * Overweight and obesity (BMI 25-50 kg/m2) Exclusion Criteria: * Other diabetes types * Insulin treatment * Shift work * Weight changes \>5% within past 3 months * Systemic glucocorticoid therapy * Systemic infections * Severe anemia * High blood pressure (\>180/110 mmHg) * Endocrinologic, liver and heart disorders * Immune diseases * Thyroid dysfunction * Heart attack or stroke * Cancer in the last 2 years * Eating disorders, food intolerance/allergy, addiction disorders, digestive disorders intestinal, liver, cardiovascular diseases * Hereditary or acquired coagulation disorders * Non-interruptible intake of blood thinners (anticoagulants) * Specific diets, intermittent fasting * Pregnancy or breastfeeding * Severe internal or psychiatric disorders or other conditions and drugs therapy that might influence the outcome of the study

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Conditions

The condition(s) this trial relates to.

Obesity obesity disorder Overweight prediabetes syndrome type 2 diabetes mellitus

As listed by the trial registrant

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

Obesity Overweight Prediabetes Type 2 diabetes

Contacts and locations

Locations

  • Olga Ramich

    Potsdam, Potsdam-Rehbrücke, 14558, Germany

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