Clinical trial Recruiting at 1 site Interventional Ages 40 to 75

DAG Oil for Metabolic Risk in Prediabetes

Official title: Efficacy of Diacylglycerol Oil on Metabolic Risk Factors in Prediabetes

Run by The First Affiliated Hospital of Guangdong Pharmaceutical University · NCT07289880 · Data updated 2026-11-12

This study tests whether replacing usual cooking oil with diacylglycerol (DAG) oil for four weeks improves blood sugar control and lipid levels in adults with prediabetes.

Quick facts

Study typeInterventional
Ages40 Years to 75 Years
SexAll
Enrollment40 (estimated)
SponsorThe First Affiliated Hospital of Guangdong Pharmaceutical University
Academic / other
Locations1 site (Guangzhou, Guangdong)
StatusRecruiting
StartedDecember 30, 2025
Main results expectedDecember 1, 2026
Study endsDecember 30, 2027
Registry record updatedOctober 21, 2026
Trial IDNCT07289880 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults aged 40-75 with prediabetes, BMI 24 kg/m² or higher, and who are willing to consume all study-provided meals for four weeks.

Probably not a fit

Individuals with established diabetes, those on glucose-lowering medications, or unable to adhere to study meals may not experience benefits.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This interventional study assigns middle-aged and older adults with prediabetes to replace their cooking oil with DAG oil for four weeks, while a control group uses colza oil. All other lifestyle factors are kept the same to isolate the effect of DAG oil on glycemic regulation, lipid metabolism, and body composition. Participants must consume all study-provided meals and meet specific metabolic and health criteria. Exclusion criteria include diabetes, certain medications, recent weight changes, and other health conditions that could confound results. The trial is led by The First Affiliated Hospital of Guangdong Pharmaceutical University with collaboration from Sun Yat-sen University and is conducted in Guangzhou/Beijing area locations.

Why it matters

Potential benefit: If successful, DAG oil could offer a simple dietary change to support better blood sugar and lipid profiles in people at risk for diabetes.

How similar studies have gone: Previous research on DAG oil has shown potential metabolic benefits, but results vary and this trial adds specific evidence in a prediabetic population.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Aged 40-75 years.
2. Diagnosed with prediabetes according to American Diabetes Association (ADA) criteria: including fasting plasma glucose (FPG) levels of 5.6-6.9 mmol/L, and/or 2-hour postprandial glucose (OGTT-2h) levels of 7.8-11.1 mmol/L, and/or glycated hemoglobin (HbA1c) levels of 5.7%-6.4%.
3. Body mass index (BMI) ≥ 24 kg/m².
4. No plans to relocate or travel extensively in the next three months.
5. Willing to consume all study-provided meals throughout the intervention.
6. Willing and able to provide written informed consent.

Exclusion Criteria:

1. Diagnosis of diabetes (Type 1 or Type 2).
2. Current use of any glucose-lowering medication.
3. Use of appetite suppressants or hormonal medications.
4. History of bariatric surgery, or weight change \>5% in the past 3 months.
5. Alcohol consumption \>40 g/day.
6. Use of antibiotics, probiotics, or prebiotics within the past 3 months.
7. Pregnancy, lactation or planning pregnancy.
8. History of severe cardiovascular disease, malignancy, autoimmune disease, cognitive impairment, or severe dysfunction of thyroid, liver, kidney, or digestive system.
9. Inability to comprehend information, communicate effectively, or comply with the study protocol.

Where it's running

  • Beijing Street
    Guangzhou, Guangdong, China
    Recruiting

Study contacts

Similar studies

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
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Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.