L-Theanine Benefits on the Brain
L-Theanine is an amino acid found almost exclusively in green tea. One of the L-Theanine benefits is to produce its anti-anxiety effects without producing sleepiness or impairing motor behavior.
L-Theanine is an amino acid found almost exclusively in green tea. L-Theanine is known to produce its anti-anxiety effects without producing sleepiness or impairing motor behavior.
Discoveries during recent years added more benefits to the brain:
- Protects brain cells and promotes cognitive function*
- Reduces the elevation of stress hormones and oxidative damage to the brain**.
- Stress significantly reduces performance, memory, increases oxidative stress in the brain, and elevates levels of stress-response hormones. During a scientific test, treating animals with L-theanine before the stress is applied, results were in reverse, in both cognitive and stress hormones, and oxidative damage.
- Lowers stroke risk and the damaging effects if a stroke has occurred. L-Theanine provides two stroke-preventing mechanisms:
- Improves nitric oxide production in endothelial cells and aids a signal to relax muscles and enhance blood distribution***.
- Inhibits TNF-a (tumor necrosis factor-alpha) and reduces the risk of an artery-blocking clot that produces a stroke****.
- Protects the body from damage after the abrupt loss of circulation during a stroke. Animal studies show that the administration of L-Theanine up to 12 hours after a stroke protects brain cells and reduces the size of the damaged brain areas.*****
- Prevents damage to brain cells induced by aluminum******.
Which tea is rich in L-Theanine?
Shade-grown teas are high in L-Theanine, as sun exposure converts L-Theanine into Catechin antioxidants. Gyokuro and Matcha are shade-grown teas. The higher grade, the richer in L-Theanine, as the higher grade is covered in the shade for a longer period of time.