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A comprehensive review of observational studies found that women who drank the most green tea had an approximately 20вЂ“30% lower risk of developing breast cancer, one of the most common cancers in women ( 21). Research has linked green tea compounds with a reduced risk of cancer, including the following studies: Green tea is an excellent source of powerful antioxidants. Antioxidants can help protect against oxidative damage ( 20). Research has shown that oxidative damage can lead to chronic inflammation, which can lead to chronic diseases, including cancers. ItвЂ™s one of the worldвЂ™s leading causes of death. Antioxidants may lower the risk of some cancersД¬ancer is caused by uncontrolled growth of cells. Green tea may boost metabolic rate and increase fat burning in the short term, although not all studies agree.Д¤. Two separate review studies reported that caffeine may increase physical performance by approximately 11вЂ“12% ( 18, 19). However, some studies on green tea donвЂ™t show any increase in metabolism, so the effects may depend on the individual and how the study was set up ( 15).Д¬affeine may also improve physical performance by mobilizing fatty acids from fat tissue and making them available for use as energy ( 16, 17). In another involving 12 healthy men, green tea extract increased fat oxidation by 17%, compared with those taking a placebo ( 13, 14). In one study involving 10 healthy men, taking green tea extract increased the number of calories burned by 4%. This is because, according to research, green tea can increase fat burning and boost metabolic rate ( 12). If you look at the ingredients list for any fat burning supplement, chances are, green tea will be on there. It also contains the amino acid L-theanine, which can work synergistically with caffeine to improve brain function. Green tea contains less caffeine than coffee but enough to produce an effect. Many people report having more stable energy and being much more productive when they drink green tea, compared with coffee. This means that the combination of the two can have particularly powerful effects in improving brain function ( 10, 11).Д«ecause of the L-theanine and the small dose of caffeine, green tea may give you a much milder and different kind of buzz than coffee. 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 isnвЂ™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 doesnвЂ™t contain as much as coffee, but enough to produce a response without causing the jittery effects associated with taking in too much caffeine.Д¬affeine 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.

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These free radicals play a role in aging and many types of diseases.Д®GCG 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.

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