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Green tea may have many health benefits, and in this study, doctors tested an antioxidant flavonoid in green tea, EGCG, for a link to brain activity and mood. Participants took 300 mg of EGCG, or a placebo. Before and two hours afterwards, researchers took a resting-state electroencephalogram (EEG) to measure brain activity.
While the placebo group did not change, the EGCG group had a greater sense of calm, reduced feelings of stress, and a significant increase in alpha, beta and theta brain waves, which correspond, respectively, to relaxation, reasoning, and creative powers.
Reference: Appetite; 2012, Vol. 58, No. 2, 767-70
From the June 2012 newsletter
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