Yeast fiber boosts flu shot? study tests immune power in older adults

NCT ID NCT05074303

First seen Nov 06, 2025 · Last updated May 14, 2026 · Updated 36 times

Summary

This study looked at whether a dietary fiber from baker's yeast (beta-glucan) can improve how well the flu vaccine works in healthy adults aged 50 and older. 78 participants took either the supplement or a placebo before getting their flu shot. Researchers measured antibody levels and tracked flu and COVID-19 cases to see if the supplement boosted immune protection.

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Contacts and locations

Locations

  • Food Science and Human Nutrition Department, University of Florida

    Gainesville, Florida, 32611, United States

Conditions

Explore the condition pages connected to this study.