Massive study seeks to unlock how your surroundings and DNA shape disease risk
NCT ID NCT00341237
First seen Jun 25, 2026 · Last updated Sep 17, 2026 · Updated 20 times
Summary
This study looks at how your genes and your environment—like what you eat, breathe, and experience—work together to influence common diseases such as diabetes, heart disease, and asthma. Researchers are collecting health questionnaires, genetic data, and other information from 25,000 adults. The goal is to better understand why some people get sick while others don't, which could lead to new ways to prevent disease.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- What this could lead to
- If successful, this study could help identify which environmental factors interact with genes to cause or protect against common diseases, pointing toward new prevention strategies.
- What could go wrong
- This is an observational study, not a treatment trial. It may not directly lead to any new therapies, and findings may need confirmation in larger, more diverse populations.
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.
- Participants
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About 25,000 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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May 2010
- 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
Convenience sample from the general population.
- Ages
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18 to 120 years
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
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 for participation in this study, an individual must meet all of the following criteria: * Adults greater than or equal to 18 years of age * If female, must not be (self-reported as) pregnant. At the time of enrollment, a pregnancy test will only be done at the PI s discretion. * Able to understand and provide written informed consent * Able to come to the NIEHS Clinical Research Unit (CRU) for enrollment and study-related visits/procedures. EXCLUSION CRITERIA An individual who does not meet the inclusion criteria listed above is excluded from participation in this study.
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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
2 sites. 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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NIEHS Clinical Research Unit (CRU)
RECRUITINGResearch Triangle Park, North Carolina, 27713, United States
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University of North Carolina
RECRUITINGChapel Hill, North Carolina, 27599-7030, United States
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Other studies related to the condition(s) this trial covers.
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- Breathing tests face off: can extra lung measurements improve asthma diagnosis?
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- Brain scans may predict who is most at risk for dangerous low blood sugar