L-Theanine, Green tea and stress

L-Theanine. Green tea. Stess

Theanine is a unique amino acid that is almost exclusively found in green tea, it has important relaxing properties, helps stress, state of mind and concentration. It acts quickly, giviing noticeable benefits in less than 40 minutes and unlike other products used for related problems, it is a totally natural and safe substance, without side effects, doesn't counteract medicationand it does not cause addiction.

Two different kinds of theanine can be found in green tea leaves: D-Theanine and L-Theanine, with different compositions of atoms. This affects its biological benefits, as only L-Theanine has an active effect our body. This piece of information is very important when choosing a food supplement, since supplements taken from green tea that contain D-Theanine decrease the effectiveness of the product. It is important then to make sure that the supplement is 100 % made up of L-Theanine.


The benefits of L-Theanine
The L-Theanine crosses the brain blood barrier, incrementing the levels of GABA and of dopamine, two neurotransmitters related with relaxation, tranquility and our well-being in general. Gamma aminobutyric acid or GABA presents a sedative and tranquilizing action, being very important to control restlessness and anxiety, since it helps us to be calmer and relaxed during our daily activity. Dopamine helps the state of mind, which enhances our mood. 

The exactness of the mechanism has not been completely proved, but it has been observed that it also increases alpha wave activity in the brain. These waves appear during the meditative state and they are related to the state of relaxation without provoking sedation.

Therefore, the L-Theanine does not affect intelligence as happens with other anxiety-relieving products that provoke a state of sleepiness or drowsiness (associated with the generation of waves Ø) . On the contrary the person keeps alert and when there are decreased degrees of mental and emotional tension, it has been observed that concentration capacity and mental performance increases, helping to think with clarity. Its benefits are summarized in the following table.

  • Promotes alpha brain waves in the brain giving a state of greater lucidity and physical and mental relaxation.
  • Increases the levels of cerebral dopamine, affecting the emotions.
  • Increases the levels of GABA in the brain, which produces a sense of wellbeing. It does not produce drowsiness.
  • Improves quality of sleep.
  • Reduces anxiety and stress.