Green tea is made from the dried leaves of an Asian native evergreen tea plant (Camellia sinensis). However, the traditional tea leaves are fermented steamed while the green tea leaves, but are unfermented. Green tea can be drunk or taken as an extract in tablet or capsule form. Green tea has more ingredients which antioxidant and anti-carcinogenic effects are attributed. Green tea contains polyphenols and catechins and caffeine, but green tea is known to contain less caffeine than coffee and many extracts are decaffeinated.
(See also nutritional supplements Overview.) Green tea is made from the dried leaves of an evergreen native to Asia tea plant (Camellia sinensis) was prepared. However, the traditional tea leaves are fermented steamed while the green tea leaves, but are unfermented. Green tea can be drunk or taken as an extract in tablet or capsule form. Green tea has more ingredients which antioxidant and anti-carcinogenic effects are attributed. Green tea contains polyphenols and catechins and caffeine, but green tea is known to contain less caffeine than coffee and many extracts are decaffeinated. Allegations GrünemTee is said that he has several health benefits, a few of which could be clearly demonstrated so far. Green tea is used, among other things, the treatment of genital warts, increased mental alertness (because of the caffeine), cancer prevention weight loss, lowering serum lipids, prevention of Koronargefäßkrankheiten, strengthening of memory, pain relief for osteoarthritis, treatment of menopausal symptoms and for a long life. Documents Green Tea – the drink and the extract – is one of the most thoroughly investigated dietary supplements on the market; however, the clinical evidence of the benefits of the drink are limited. Recently, certain active ingredients in green tea (sinecatechins, trade name Veregen and Polyphenon E) for the treatment of genital warts due to human papillomavirus infection were admitted. A randomized controlled trial showed that the defined extract (55% epigallocatechin gallate) is effective and safe for genital and perianal warts (1). Another study showed that treatment with the yielded derived from green tea extract as compared to conventional pharmaceutical lower treatment costs (2). let numerous meta-analyzes of clinical trials shows that green tea is safe for moderate and regular consumption. In addition, there are small, usually not significant, benefits for weight loss and prevention of cardiovascular disease, while there is not sufficient and often conflicting evidence for any benefit of green tea consumption for cancer prevention (3-6). Furthermore, strict large clinical trials designed required before claims can be confirmed. A potentially confusing evidence from population studies is that in countries where green tea is consumed regularly, other cultural, behavioral or genetic factors may contribute to good health. Side Effects The side effects are similar to the effects of caffeine. These include insomnia, anxiety, tachycardia, and mild tremor. Pregnant women should avoid excessive caffeine intake. Drug interactions vitamin K in green tea may counteract the anticoagulant effect of warfarin. Green tea extract references Stockfleth E, H Beti, Ora?an R, et al. Topical Polyphenon E in the treatment of external genital and perianal warts: a randomized controlled trial. Br J Dermatol 158 (6): 1329-1338, 2008. Langley PC. A cost-effectiveness analysis of sinecatechins in the treatment of external genital warts.J Econ Med 13 (1): 1-7, 2010. Boehm K, Borrelli F, Ernst E, et al. Green Tea (Camellia sinensis) for the prevention of cancer. Cochrane Database Syst Rev8 (3): CD005004, 2009. Sturgeon JL, Williams M, van Servellen G. Efficacy of green tea in the prevention of cancers. Nurs Health Sci 11 (4): 436-446, 2009. Jurgens TM, AM Whelan, Killian L, et al. Green tea for weight loss and weight maintenance in overweight or obese adults. Cochrane Database Syst Rev. CD3 (CDM is (decimeter)) Hartley L, Flowers N, Holmes J, et al. Green and black tea for the primary prevention of cardiovascular disease. Cochrane Database Syst Rev 6: CD009934,, 2013.