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This study examines the protective effect of compound plant nutrients (polyphenols) against health damage caused by environmental pollutants, compared with placebo. It included participants aged 18-65 with a body mass index below 35 who had lived on campus for one year. It was run as a study with no assigned phase and has been completed.
The summary above is a plain-language rendering of the official record. The original English title is shown for reference.
Criteria are reproduced from the ClinicalTrials.gov record in the original English. Only the trial team can determine eligibility.
Inclusion Criteria: 1\. Participants aged 18-65 years; 2. Body mass index (BMI) \< 35 kg/m²; 3. On-campus residence for one year and no need to leave the province during the trial period; 4. Agreeing to and signing the informed consent form. Exclusion Criteria: 1.Documented diagnosis of congenital or acquired immunodeficiency disorders, allergic diseases, gastrointestinal pathologies, or other acute/chronic conditions requiring therapeutic intervention; 2.Administration of immunosuppressive agents, antibiotics, probiotics, prebiotics, synbiotics, or gastrointestinal motility-active medications within three months prior to the trial; 3.Consumption of nutritional supplements within three months preceding the study; 4.Underlying disease, including hypertension or diabetes mellitus; 5.Habitual substance use (tobacco smoking or alcohol consumption); 6.Influenza vaccination within 12 months prior to the trial; 7.pregnancy or lactation status; 8.Body weight fluctuation exceeding 5% within three months before the study; 9.Concurrent or planned enrollment in alternative clinical investigations.