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Improved memory and learning ability
One of the important health benefits of regular green tea drinking is improved memory and learning ability. Population-based study[2] in Japan revealed that high green tea drinking maintains cognitive function. Also, according to the results from animal studies[3-4], green tea consumption may enhance learning and memory ability.
The main components of green tea that are thought to work on improving brain function are polyphenols, epigalochatechin-3-gallate (EGCG), a very strong antioxidant. The high use of oxygen during the metabolic processes leads to the generation of a large number of free radicals (a highly reactive molecules). EGCG can penetrate the brain's blood barrier and is able to enact its antioxidative affects on the free radicals that cause damage in the brain.
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here is strong evidence that green tea has fat-burning properties and promotes weight loss, especially when combined with increased physical activity and a healthy diet. Green tea polyphenols are known to promote weight loss by increasing the metabolism of fats by the liver (thermogenic effect), inhibiting lipase (fat absorption enzyme) in the digestive tract, and providing a feeling of satiety and fullness[5]. Recent high-quality study[6] demonstrated that green tea can reduce body weight in obese persons by increasing energy expenditure and fat oxidation. The results of new Japanese study[7] also confirm fat-burning properties of green tea. Researches found that continuous ingestion of a green tea extract high in catechins led to a reduction in body fat, systolic blood pressure, and LDL cholesterol, that in its turn contributes to a decrease in obesity and cardiovascular disease risks.
4 Skin protection from Ultraviolet
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Green tea shows promise in the prevention of stroke[1, 24]. Furthermore, the green tea polyphenols, particularly EGCG, have been shown to protect brain cells from destructive processes following stroke[25-26].
10 Prevention of cognitive impairment and neurodegenerative diseases (Alzheimer's and Parkinson's Diseases)
Green tea is neuroprotective, and may reduce the risk of degenerative disorders of the central nervous system, such as cognitive decline, Alzheimer's disease and Parkinson's disease. Green tea catechin polyphenols produce several neuroprotective activities like iron chelation, scavenging of radicals, activation of survival genes and cell signaling pathways, anti-inflammatory activities, and inhibitory action on Abeta fibrils/oligomers formation[27, 29]. All of these biological effects result in a lessening of damage to brain cells.
Recently, Japan scientists have discovered that people who consumed more than 2 cups of green tea a day had a 50% lower chance of having cognitive impairment, in comparison to those who drank fewer than 2 cups a day, or who consumed other tested beverages[28].
11 Atherosclerosis prevention
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