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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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
Locations
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Brigham and Women's Hospital
Boston, Massachusetts, 02215, United States
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