Can daily supplements ward off infections? huge trial investigates
NCT ID NCT01758081
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at whether taking vitamin D and omega-3 (fish oil) supplements can lower the risk of infections like colds, flu, and urinary tract infections in healthy adults. It also measures a protein called hCAP18, which is part of the body's natural defense against germs. Over 25,000 people are taking part, but this is an observational analysis, not a test of a new treatment.
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Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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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.
Contacts and locations
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Locations
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Brigham and Women's Hospital
Boston, Massachusetts, 02215, United States