A study on stress reduction of students by Matcha - Anti-stress effect of Matcha

Theanine, a major amino acid in green tea, exhibits a stress-reducing effect on mice and humans. In the case of matcha, an effective stress-reducing outcome was only possible when the molar ratio of (caffeine + epigallocatechin gallate (EGCG)) / (theanine + Arginine) was less than three. Anxiety of participants, a reaction to stress, was significantly lower in the test-matcha group, which was expected to have a stress-reducing effect, than in the placebo group.