L-theanine is an amino acid that is commonly found in tea leaves and is known for its ability to promote relaxation and reduce stress. It has also been shown to have a range of cognitive benefits, including improved attention, focus, and memory.
One of the key mechanisms by which l-theanine supports cognitive function is through its ability to increase levels of the neurotransmitter GABA in the brain. GABA is a chemical messenger that helps to regulate brain activity and promote relaxation. By increasing GABA levels, l-theanine can help to reduce anxiety and improve mood, leading to improved cognitive performance.
In addition to its cognitive benefits, l-theanine may also have other health benefits. It has been shown to have antioxidant properties, which can help to reduce inflammation and protect cells from damage. It may also help to improve the function of the immune system and support cardiovascular health.