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Green Tea for Flu

January 31, 2022

By Campbell's Nutrition

Researchers reviewed eight green tea extract studies, covering 5,048 participants, and found on
average overall, those who regularly consumed green tea extracts were 33 percent less likely to contract
the flu compared to placebo.

Green tea contains catechins and its constituent, epigallocatechin-gallate (EGCG), the active
ingredients. A 3.5-ounce brewed cup of green tea typically contains 100 to 150 mg of catechins, and
about 80 mg of EGCG. Doctors say gargling with 100 to 280 mg of catechins per day may prevent flu. The
European Food Safety Authority says to maintain healthy live function, EGCG levels should be below 800
mg per day.

Reference: Molecules; 2021, Vol. 26, No. 13, 4014

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