Medicinal and health related benefits of Green Tea for human intake
AbstractGreen tea is originated from China and India and is potentially recommended by the clinicians for its potential health benefits to human beings. Since ancient times, tea stands amongst the most popular beverage globally. An estimate shows that nearly 78% of the tea consumed worldwide is black and only about 20% is green. Except the herbal tea, all other types of tea are brewed from the dried leaves of Camellia sinensis bush. The type of tea is determined by the level of oxidation of the leaves. Green tea is prepared from the unoxidized leaves which determine its health promoting effects. It contains the major portion of polyphenols and antioxidants. Christopher Ochner, PhD, a research scientist in nutrition at the Icahn School of Medicine at Mount Sinai Hospital has performed meticulous researches on this fact. Green tea contains natural chemicals called polyphenols which are believed to be potential anti-carcinogenic and anti-inflammatory factors.
Boehm K, Borrelli F, Ernst E, et al. Green tea (Camellia sinensis) for the prevention of cancer. Cochrane Database Syst Rev 3 (2009).: CD005004. doi:10.1002/14651858.CD005004.pub2
Johnson R, Bryant S, Huntley AL. Green tea and green tea catechin extracts: an overview of the clinical evidence. Maturitas 73.4 (Dec. 2012): 280–7.doi:10.1016/j.maturitas.2012.08.008
Tang J, Zheng JS, Fang L, Jin Y, Cai W, Li D. Tea consumption and mortality of all cancers, CVD and all causes: a meta-analysis of eighteen prospective cohort studies. Br J Nutr 114 (Jul. 2015): 1–11.doi:10.1017/S0007114515002329
Huang YQ, Lu X, Min H, Wu QQ, Shi XT, Bian KQ, Zou XP. Green tea and liver cancer risk: A meta-analysis of prospective cohort studies in Asian populations. Nutrition 32 (Jul. 2015): 3–8.doi:10.1016/j.nut.2015.05.021
Wang Y, Yu X, Wu Y, Zhang D. Coffee and tea consumption and risk of lung cancer: a dose-response analysis of observational studies. Lung Cancer 78.2 (Nov. 2012): 169–70.doi:10.1016/j.lungcan.2012.08.009
Zeng JL, Li ZH, Wang ZC, Zhang HL. Green tea consumption and risk of pancreatic cancer: a meta-analysis. Nutrients 6.11 (Oct. 2014): 4640–50. doi:10.3390/nu6114640.
Hou IC, Amarnani S, Chong MT, Bishayee A. Green tea and the risk of gastric cancer: epidemiological evidence. World J Gastroenterol 19.24 (Jun. 2013): 3713–22. doi:10.3748/wjg.v19.i24.3713
Liu K, Zhou R, Wang B, Chen K, Shi LY, Zhu JD, Mi MT. Effect of green tea on glucose control and insulin sensitivity: a meta-analysis of 17 randomized controlled trials. Am J Clin Nutr 98.2 (Aug. 2013): 340–8. doi:10.3945/ajcn.112.052746.
Zheng XX, Xu YL, Li SH, Hui R, Wu YJ, Huang XH. Effects of green tea catechins with or without caffeine on glycemic control in adults: a meta-analysis of randomized controlled trials. Am J Clin Nutr 97.4 (Apr. 2013): 750–62. doi:10.3945/ajcn.111.032573.
Zheng XX, Xu YL, Li SH, Liu XX, Hui R, Huang XH. Green tea intake lowers fasting serum total and LDL cholesterol in adults: a meta-analysis of 14 randomized controlled trials. Am J Clin Nutr 94.2 (Aug. 2011): 601–10. doi:10.3945/ajcn.110.010926
Jurgens TM, Whelan AM, Killian L, Doucette S, Kirk S, Foy E. Green tea for weight loss and weight maintenance in overweight or obese adults. Cochrane Database Syst Rev 12 (2012): CD008650.doi:10.1002/14651858.CD008650.pub2
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.