Massive 30-Year study aims to unlock secrets of diabetes and obesity
NCT ID NCT07388537
First seen Jun 27, 2026 · Last updated Sep 18, 2026 · Updated 58 times
Summary
This study will follow 1,000 people aged 8 to 65 who are overweight, have high blood sugar, or have metabolic issues. Researchers will collect blood, saliva, urine, and stool samples during routine clinic visits, along with questionnaires about diet, sleep, and mood. The goal is to better understand how diabetes and obesity progress over time, especially in younger people.
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Study facts
What this study's own registry entry says, in plain language.
- Participants
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About 1,000 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Sep 2026
An estimate. Start dates often move.
- Expected to finish
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Apr 2055
An estimate. End dates often move.
- Lead sponsor
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A government research agency
The lead sponsor is the US National Institutes of Health.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
This is a single-site observational study conducted at the NIH Clinical Center. Youth and adults who have suspected or established hyperglycemia, overweight or obesity, or metabolic disease, or who require clinical screening for such conditions are provided standard clinical care. Data and samples obtained during regular clinical care will be retained for future research. Recommendations for other treatment options outside of the NIH will be discussed with study participants and may be discussed with their primary or referring physicians. The schedule a participant follows will be based on their unique clinical needs.
- Ages
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8 to 65 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: In order to be eligible to participate in this study, an individual must meet all of the following criteria: 1. Age 8 years to 65 years 2. Meet at least one of the following: a. Overweight/Obesity: i. For participants under 18 years of age: BMI \>= 85th percentile for age and sex ii. For participants \>= 18 years of age: BMI \>= 25 kg/m\^2 (\>=23 kg/m\^2 for self-reported Asian race/ethnicity) b. Suspected or evidence of hyperglycemia: i. Diagnosis of prediabetes or diabetes in medical history or by participant/guardian/Legally Authorized Representative (LAR) report, OR ii. Fasting blood glucose \>= 100 mg/dL in medical record, OR iii. Postprandial blood sugar \>= 140 mg/dL in medical record, OR iv. Hemoglobin A1c \>= 5.7% in medical record EXCLUSION CRITERIA: An individual who meets any of the following criteria will be excluded from participation in this study: 1. History of significant medical illnesses that the investigators feel may interfere with potential evaluations, i.e. individuals who are critically ill, unstable, or with severe organ failure that may affect/limit the endocrine evaluation and place unsustainable demands on Clinical Center or NIDDK resources. 2. History of any medical, psychiatric, or social conditions which, in the opinion of the investigators, would make participation in this protocol not in the best interest of the participant. 3. Inability or unwillingness of participant, parent/guardian, or LAR to provide informed consent.
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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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National Institutes of Health Clinical Center
Bethesda, Maryland, 20892, United States
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