As per a study, people who took about 4 cups of green tea in a day were far less likely to feel depressed. This property of green tea can be attributed to the amino acid L-theanine, which stimulates the release of chemicals like serotonin and dopamine to fight depression symptoms.
In yet another study conducted in mice, green tea had produced effects similar to an antidepressant (27). And the caffeine in green tea can also play an important role in depression treatment – along with helping relieve stress and anxiety.
The EGCG in green tea, as per studies, can help improve the symptoms of Down Syndrome. It protects the body from cell damage that primarily causes the disease. This chemical also improves cognitive function in affected individuals (28).
Down Syndrome is caused when the individuals have three copies of the chromosome number 21 (people usually have two). Green tea was found to limit the ill effects of this third chromosome, which is responsible for the serious symptoms of the disease.