If you purchase L-theanine with a brand other than BioSynergy brand, open a capsule and taste. Stress can impair the ability to perform mentally. It may result in reactions to situations that cause enhanced frustration, hostility or even injury. Stress slowly destroys the immune system, lowering resistance to disease and thus allowing degenerative and opportunistic diseases to occur.
Stress causes depression.
The entire population is subjected to stress. In a 1998 survey, nearly 65 percent of the adult population indicated that they were under great stress. More than 23 million Americans suffer from anxiety illness. L-theanine is a unique free form amino acid found only in the tea plant and in the mushrooms Xerocomus badius and certain species of genus Camellia , C. japonica and C. sasanqua . Tea is the most consumed beverage worldwide after water, and has been consumed for thousands of years by billions of people.