Tang, N. P., Li, H., Qiu, Y. L., Zhou, G. M., and Ma, J. Vandeberghe K, Gillis N, Van Leemputte M, et al. Some population research suggests that drinking at least 5 cups of green tea daily is not linked with a reduced risk of stomach cancer. Cone EH, Lange R, Darwin WD. View abstract. But not all research agrees. Dreher HM. Acheson KJ, Gremaud G, Meirim I, et al. 2013 Oct 15;20(13):1186-9. View abstract. View abstract. pii: E510. 2010 Oct;4(5):225-30. 2012;64(8):1143-52. Armidin RP, Yanti GN. Jefferson JW. View abstract. Ahn WS, Yoo J, Huh SW, et al. A., Boon, N., Kovacs, E. M., and Mela, D. J. Diabetes Res.Clin Pract. Mu, L. N., Zhou, X. F., Ding, B. G., and Wang, R. H. Study on the protective effect of preen tea on gastric, liver and esophageal cancer (in Chinese). View abstract. J.Biomed.Biotechnol. Am J Clin Nutr 2010;91:73-81. Cannon ME, Cooke CT, McCarthy JS. Arthritis Res.Ther. A., Parnes, H. L., Sokoloff, M. H., Gretzer, M. B., and Chow, H. H. Randomized, double-blind, placebo-controlled trial of polyphenon E in prostate cancer patients before prostatectomy: evaluation of potential chemopreventive activities. Clin Nutr 2008;27(3):363-370. Comparative effects of EGCG, green tea and a nutrient mixture on the patterns of MMP-2 and MMP-9 expression in cancer cell lines. Some research suggests that drinking more green tea daily is linked to a reduced risk of death from any cause. View abstract. Misaka S, Yatabe J, Muller F, et al. View abstract. But some conflicting research exists. 2014 Feb 14;12:38. Arts, I. C. A review of the epidemiological evidence on tea, flavonoids, and lung cancer. Seek emergency medical attention or call the Poison Help line at 1-800-222-1222. Am.J.Clin.Nutr. Caffeine vs caffeine-free sports drinks: effects on urine production at rest and during prolonged exercise. Qian F, Wei D, Zhang Q, Yang S. Modulation of P-glycoprotein function and reversal of multidrug resistance by (-)-epigallocatechin gallate in human cancer cells. Prostate Cancer Prostatic Dis 2014;17(2):180-6. 2012;11:127. Nagao, T., Meguro, S., Hase, T., Otsuka, K., Komikado, M., Tokimitsu, I., Yamamoto, T., and Yamamoto, K. A catechin-rich beverage improves obesity and blood glucose control in patients with type 2 diabetes. View abstract. View abstract. View abstract. View abstract. Shirai T, Hayakawa H, Akiyama J, et al. There is conflicting evidence about the effects of green tea on stomach cancer risk. View abstract. Green tea as a safe alternative approach for nonalcoholic fatty liver treatment: A systematic review and meta-analysis of clinical trials. View abstract. View abstract. Tsao, A. S., Liu, D., Martin, J., Tang, X. M., Lee, J. J., El-Naggar, A. K., Wistuba, I., Culotta, K. S., Mao, L., Gillenwater, A., Sagesaka, Y. M., Hong, W. K., and Papadimitrakopoulou, V. Phase II randomized, placebo-controlled trial of green tea extract in patients with high-risk oral premalignant lesions. 2005;31(7 Pt 2):855-860. 2013;99(19):1383-9. doi: 10.1136/heartjnl-2013-303950. View abstract. View abstract. Eur J Clin Pharmacol 2018;74(6):775-83. doi: 10.1007/s00228-018-2436-2. 2010;80(1):54-64. Cancer Sci 2004;95(7):596-601. Williams MH, Branch JD. Tumor 2002;22(3):11-15. J Am Coll Nutr 1994;13:6-21.. View abstract. Kim TE, Ha N, Kim Y, et al. Green tea consumption and risk of stomach cancer: a meta-analysis of epidemiologic studies. Medications that slow blood clotting (Anticoagulant / Antiplatelet drugs) interacts with GREEN TEA. Proc.Soc.Exp.Biol.Med 1999;220(4):203-209. Asian Pac J Cancer Prev. Wu CH, Yang YC, Yao WJ, et al. Chemopreventive effect of green tea (Camellia sinensis) against cigarette smoke induced mutations in humans. Suyama, E., Tamura, T., Ozawa, T., Suzuki, A., Iijima, Y., and Saito, T. Remineralization and acid resistance of enamel lesions after chewing gum containing fluoride extracted from green tea. 2010;89(5):468-472. J Ethnopharmacol. Free Radic Biol Med 2002;33:1097-105. Hasani-Ranjbar, S., Nayebi, N., Moradi, L., Mehri, A., Larijani, B., and Abdollahi, M. The efficacy and safety of herbal medicines used in the treatment of hyperlipidemia; a systematic review. Zijp IM, Korver O, Tijburg LB. Prostaglandins Leukot Med 1987;27:9-13. Masuda S, Maeda-Yamamoto M, Usui S, Fujisawa T. 'Benifuuki' green tea containing o-methylated catechin reduces symptoms of Japanese cedar pollinosis: a randomized, double-blind, placebo-controlled trial. 2018;10(11). Ann.Epidemiol. View abstract. Durlach PJ. Green Tea Consumption and Esophageal Cancer Risk: A Meta-analysis. Also, drinking more green tea is associated with a reduced risk of having prostate cancer. View abstract. Eur J Clin Nutr 1999;53:831-9. Caffeine works similarly to theophylline. Singh, R., Ahmed, S., Islam, N., Goldberg, V. M., and Haqqi, T. M. Epigallocatechin-3-gallate inhibits interleukin-1beta-induced expression of nitric oxide synthase and production of nitric oxide in human chondrocytes: suppression of nuclear factor kappaB activation by degradation of the inhibitor of nuclear factor kappaB. 2009;15(4):341-346. Some research suggests that drinking at least 3.5 cups of green tea daily is not linked to a reduced risk of developing non-Hodgkin lymphoma. Wu, Y. J., Liang, C. H., Zhou, F. J., Gao, X., Chen, L. W., and Liu, Q. Filippini T, Malavolti M, Borrelli F, et al. However, it too contains phytoestrogens, which work against the natural reproductive cycle and could therefore null the desired effect of birth control pills. Netsch, M. I., Gutmann, H., Schmidlin, C. B., Aydogan, C., and Drewe, J. 2000;24(2):252-258. Int J Cosmet.Sci. View abstract. View abstract. Dissociation of augmented physiological, hormonal and cognitive responses to hypoglycaemia with sustained caffeine use. View abstract. View abstract. Park, C. S., Kim, W., Woo, J. S., Ha, S. J., Kang, W. Y., Hwang, S. H., Park, Y. W., Kim, Y. S., Ahn, Y. K., Jeong, M. H., and Kim, W. Green tea consumption improves endothelial function but not circulating endothelial progenitor cells in patients with chronic renal failure. 2003;21(1):102-109. Srichairatanakool S, Ounjaijean S, Thephinlap C, Khansuwan U, Phisalpong C, Fucharoen S. Iron-chelating and free-radical scavenging activities of microwave-processed green tea in iron overload. BMC Cancer. Rinsho Byori 2009;57(9):834-841. Voskoboinik A, Kalman JM, Kistler PM. 2017;11:1409-1416. View abstract. Eur.J Cardiovasc.Prev.Rehabil. Javaid, A. and Bonkovsky, H. L. Hepatotoxicity due to extracts of Chinese green tea (Camellia sinensis): a growing concern. Green tea – Green tea does have moderate interaction risk with birth control. 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