Green Tea Catechins and Theanine to Prevent Influenza in Healthcare Workers
Author Information
Author(s): Matsumoto Keiji, Yamada Hiroshi, Takuma Norikata, Niino Hitoshi, Sagesaka Yuko M
Primary Institution: University of Shizuoka
Hypothesis
Can green tea catechins and theanine clinically prevent influenza infection among healthcare workers?
Conclusion
Taking green tea catechins and theanine may effectively prevent influenza infection among healthcare workers.
Supporting Evidence
- The incidence of clinically defined influenza infection was significantly lower in the catechin/theanine group (4.1%) compared to the placebo group (13.1%).
- The time free from clinically defined influenza infection was significantly different between the two groups.
Takeaway
This study tested if green tea can help keep healthcare workers from getting the flu, and it seems to work!
Methodology
A randomized, double-blind, placebo-controlled trial involving 200 healthcare workers over 5 months.
Limitations
The study had a small sample size and participants were mostly vaccinated, which may underestimate the effectiveness.
Participant Demographics
Healthcare workers aged over 20 years, with a mean age of 42.7 years.
Statistical Information
P-Value
0.022
Confidence Interval
0.07 to 0.76
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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