Blood sugar rollercoaster: can diet counseling smooth the ride for obese teens?
NCT ID NCT07771842
First seen Aug 18, 2026 · Last updated Aug 19, 2026 · Updated 1 time
Summary
This study explores whether dietary counseling on a low glycemic index diet can reduce blood sugar fluctuations in adolescents with obesity. Participants will receive education and sample menus to help them choose foods that cause a slower, steadier rise in blood glucose. The trial will measure changes in blood sugar variability and satiety before and after the dietary intervention, aiming to understand the link between glucose swings and eating behaviors.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Dietary counseling and education on a low glycemic index diet, including sample menus
- What this could lead to
- If successful, this could support using glucose sensors as a tool to help obese adolescents understand how food affects their blood sugar and appetite, potentially improving weight management.
- What could go wrong
- This is a small exploratory study with only 20 participants, so results may not apply broadly. The intervention is behavioral, and adherence to dietary changes can vary, limiting its impact.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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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
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About 20 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Oct 2026
An estimate. Start dates often move.
- Expected to finish
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May 2028
An estimate. End dates often move.
- Lead sponsor
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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
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12 to 18 years
- Sex
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Anyone
- Healthy volunteers
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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 Hide 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: * Adolescents who have entered puberty (Tanner S2+ or G2+) * Aged over 12 and under 18 years * Obese, defined by an IOTF Body Mass Index (BMI) \> 30 * Child's assent and consent from the person(s) exercising parental authority Exclusion Criteria: * Type 2 diabetes: HbA1c \> 6.5% or fasting plasma glucose \> 1.26 g/L * Type 1 diabetes * Treatment capable of altering the glycemic profile (e.g., corticosteroids) * Intercurrent illness capable of significantly impacting eating behavior (e.g., Prader-Willi syndrome) or the postprandial glycemic profile * Hypothalamic obesity * Neuropsychomotor developmental disorders, intellectual disability * History of bariatric surgery * Pregnant, parturient, or breastfeeding women * Persons deprived of liberty by a judicial or administrative decision * Persons undergoing psychiatric care * Persons admitted to a healthcare or social care facility for purposes other than the research * Adults subject to a legal protection measure (guardianship, curatorship) * Persons not affiliated with a social security scheme or beneficiaries of a similar scheme * Participation in a study affecting appetite or blood glucose levels
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Hôpital-Femme-Mère-Enfant - Service d'endocrinologie et diabétologie pédiatrique
Bron, 69500, France
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