The science Japan has found that green tea can help older people leave feeling melancholy.

Research shows: the tool no longer than 70 years old upset if drinking more than 4 cups of green tea a day. Or those who drink green tea also are 44% lower risk of depression than those who do not drink more than 1 cup of green tea daily.

Of the 1058 participants in the experiment, 34% of men and 24% of women with serious mental disorders. 488 people consulted reported that they drink more than 4 daily cups of green tea, 284 person-2 or 3 cups, then take a left 286 people or less than 1 cup.

Positive effects of green tea for your mood is not related to social status and economic circumstances, sex, diets, medical, taking antidepressants, smoking and practice can power of the participants experiment.

Scientists believe that green tea have a protective effect on the amino acid is due teanin, sedative effect.

While black tea and coffee not prevent depression.

Recently, people also found that green tea reduces the risk of developing mouth cancer (down 42%) and some form of blood cancer (down 48%).