Green Tea L-Theanine's Preventive Benefits For Brain Diseases

L-theanine is a substance that easily passes through the blood-brain barrier. Studies have shown that the material basis for drinking tea to relax people is L-theanine. Electroencephalogram (EEG) monitoring results found that L-theanine (50 mg) can promote alpha brain wave activity, make people reach a state of relaxation, relieve mental and physical fatigue, improve stress resistance, and improve mood.

L-theanine (400 mg·d-1) can actively relieve the anxiety symptoms of patients with DSM-IV schizophrenia and schizoaffective disorder (n=40). Studies have shown that long-term use of theanine can safely and effectively relieve depression symptoms, which may be related to the regulation of the central monoamine neurotransmitter system. L-theanine significantly increased brain θ waves (an indicator of cognitive acuity) in patients with mild cognitive impairment (n=91), memory and selective attention were significantly improved, and the subjects’ memory was significantly increased Coefficient and word reading volume.

L-theanine can significantly inhibit the death of nerve cells in the CA1 area of the rat hippocampus, thereby preventing neurotoxin-induced PD and other diseases.