Basic carbohydrate counting for adults with prediabetes
Official title: The Effect of Basic Carbohydrate Counting on HbA1c in Prediabetes: A Randomized Controlled Trial
Run by Marmara University · NCT07525622 · Data updated 2026-11-12
This program will test whether basic carbohydrate counting education helps adults with prediabetes lower their HbA1c.
Quick facts
| Study type | Interventional |
|---|---|
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 120 (estimated) |
| Sponsor | Marmara University Academic / other |
| Locations | 1 site (Istanbul, Pendik) |
| Status | Recruiting |
| Started | April 27, 2026 |
| Main results expected | July 2026 |
| Study ends | November 2026 |
| Registry record updated | May 12, 2026 |
| Trial ID | NCT07525622 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are adults aged 18 or older with prediabetes (HbA1c 5.7%–6.4%), able to read and write, not currently using or unwilling to start oral antidiabetic drugs, and who have not previously learned carbohydrate counting.
✕Probably not a fit
People with diagnosed diabetes, those already using carbohydrate counting, individuals with very low daily carbohydrate intake (<100 g/day), pregnant or breastfeeding women, or those with uncontrolled medical conditions or cognitive/communication barriers are unlikely to benefit or be eligible.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This is a randomized controlled trial conducted in a primary care outpatient clinic at Marmara University Hospital enrolling adults with HbA1c 5.7%–6.4%. Participants are randomized to receive structured basic carbohydrate-counting nutrition education or standard care without structured nutrition education. The main outcome is change in HbA1c following the intervention, with other self-management and dietary measures collected as part of routine follow-up. The trial targets feasible, clinic-deliverable education to see if a simple, structured nutrition approach can alter short-term glycemic risk markers.
Why it matters
Potential benefit: If successful, the intervention could offer a simple, clinic-based education method to lower HbA1c and help delay or prevent progression to type 2 diabetes.
How similar studies have gone: Carbohydrate counting is an established tool that improves glycemic control in people with diabetes, but there is limited direct evidence demonstrating its benefit specifically in prediabetes.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Adults aged 18 years and older * Able to read and write Individuals with prediabetes who are not using or are unwilling to initiate oral antidiabetic drugs. Exclusion Criteria: * Individuals with a diagnosis of diabetes mellitus * Those who have previously received carbohydrate counting training or are currently applying carbohydrate counting * Individuals with low daily carbohydrate intake (\<100 g/day) * Presence of uncontrolled medical conditions that may affect dietary intake, as determined by the investigator * Pregnant or breastfeeding women, or those planning pregnancy during the study period * Participation in another clinical study Inability or unwillingness to provide informed consent or comply with study procedures * Cognitive impairment or communication difficulties (hearing, understanding, or speaking)
Where it's running
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Marmara University Hospital
Istanbul, Pendik, Turkey (Türkiye) Recruiting
Study contacts
- Study coordinator: Hamide Vural, MD
- Email: hamidesahin92@gmail.com
- Phone: +905554907224
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.