Studies show that caffeine and L-theanine can have synergistic effects. It also increases dopamine and the production of alpha waves in the brain ( 7, 8, 9). L-theanine increases the activity of the inhibitory neurotransmitter GABA, which has anti-anxiety effects. It also contains amino acid L-theanine, which can cross the blood-brain barrier ( 7). However, caffeine isn’t the only brain-boosting compound in green tea. Research has consistently shown that caffeine can improve various aspects of brain function, including mood, vigilance, reaction time, and memory ( 6). This way, it increases the firing of neurons and the concentration of neurotransmitters like dopamine and norepinephrine ( 4, 5). It doesn’t contain as much as coffee, but enough to produce a response without causing the jittery effects associated with taking in too much caffeine.Ĭaffeine affects the brain by blocking an inhibitory neurotransmitter called adenosine. The key active ingredient is caffeine, which is a known stimulant. Green tea does more than just keep you alert, it may also help boost brain function. These antioxidants can have various beneficial effects on health. Green tea is loaded with polyphenol antioxidants, including a catechin called EGCG. That being said, even if you choose a lower quality brand, the benefits still outweigh any risk. Try to choose a higher quality brand of green tea, because some of the lower quality brands can contain excessive amounts of fluoride ( 3). Green tea also has small amounts of minerals that can benefit your health.

It appears to be one of the main compounds that gives green tea its medicinal properties ( 2). Research has tested its ability to help treat various diseases. These free radicals play a role in aging and many types of diseases.ĮGCG is one of the most powerful compounds in green tea. These substances can reduce the formation of free radicals in the body, protecting cells and molecules from damage.

Catechins are natural antioxidants that help prevent cell damage and provide other benefits. Green tea contains a catechin called epigallocatechin-3-gallate (EGCG). Tea is rich in polyphenols, which are natural compounds that have health benefits, such as reducing inflammation and helping to fight cancer. The green tea plant contains a range of healthy compounds that make it into the final drink ( 1). Green tea is more than just a hydrating beverage.

Warm bodies 2 the burning world