Green Tea, Coffee, and Diabetes
Authors: Rob M. van Dam
Journal: Annals of Internal Medicine (2006)

Letters17 October 2006Green Tea, Coffee, and DiabetesRob M. van Dam, PhDRob M. van Dam, PhDFrom the Harvard School of Public Health, Boston, Massachusetts.Search for more papers by this authorAuthor, Article, and Disclosure Informationhttps://doi.org/10.7326/0003-4819-145-8-200610170-00018 SectionsAboutFull TextPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinkedInRedditEmail TO THE EDITOR: Iso and colleagues (1) presented interesting results on the association between green tea and coffee consumption and a lower risk for type 2 diabetes in Japanese adults. They also examined caffeine intake and stated that they think that the observed inverse associations for coffee and green tea were mostly due to the inverse association between caffeine intake and risk for type 2 diabetes. I do not think this emphasis on caffeine intake is appropriate. First, calculated caffeine intake was the weighted sum of coffee and tea intakes and would therefore be highly correlated with intake of any ...References1. Iso H, Date C, Wakai K, Fukui M, Tamakoshi A. The relationship between green tea and total caffeine intake and risk for self-reported type 2 diabetes among Japanese adults. Ann Intern Med. 2006;144:554-62. [PMID: 16618952] LinkGoogle Scholar2. van Dam RM. Coffee and type 2 diabetes: from beans to beta-cells. Nutr Metab Cardiovasc Dis. 2006;16:69-77. [PMID: 16399494] CrossrefMedlineGoogle Scholar3. Salazar-Martinez E, Willett WC, Ascherio A, Manson JE, Leitzmann MF, Stampfer MJ, et al. Coffee consumption and risk for type 2 diabetes mellitus. Ann Intern Med. 2004;140:1-8. [PMID: 14706966] LinkGoogle Scholar4. Greenberg JA, Axen KV, Schnoll R, Boozer CN. Coffee, tea and diabetes: the role of weight loss and caffeine. Int J Obes (Lond). 2005;29:1121-9. [PMID: 15925959] CrossrefMedlineGoogle Scholar5. van Dam RM, Willett WC, Manson JE, Hu FB. Coffee, caffeine, and risk of type 2 diabetes: a prospective cohort study in younger and middle-aged U.S. women. Diabetes Care. 2006;29:398-403. [PMID: 16443894] CrossrefMedlineGoogle Scholar6. Battram DS, Arthur R, Weekes A, Graham TE. The glucose intolerance induced by caffeinated coffee ingestion is less pronounced than that due to alkaloid caffeine in men. J Nutr. 2006;136:1276-80. [PMID: 16614416] CrossrefMedlineGoogle Scholar Author, Article, and Disclosure InformationAffiliations: From the Harvard School of Public Health, Boston, Massachusetts.Disclosures: None disclosed. PreviousarticleNextarticle Advertisement FiguresReferencesRelatedDetailsSee AlsoCoffee Consumption and Risk for Type 2 Diabetes Mellitus Eduardo Salazar-Martinez , Walter C. Willett , Alberto Ascherio , JoAnn E. Manson , Michael F. Leitzmann , Meir J. Stampfer , and Frank B. Hu The Relationship between Green Tea and Total Caffeine Intake and Risk for Self-Reported Type 2 Diabetes among Japanese Adults Hiroyasu Iso , Chigusa Date , Kenji Wakai , Mitsuru Fukui , Akiko Tamakoshi , and Green Tea, Coffee, and Diabetes Hiroyasu Iso Correction: Patients' Global Ratings of Their Health Care Are Not Associated with the Technical Quality of Their CareGreen Tea, Coffee, and Diabetes Luca Mascitelli and Francesca Pezzetta Green Tea, Coffee, and Diabetes Ruoling Chen Green Tea, Coffee, and Diabetes Tsung O. Cheng Metrics Cited ByCoffee consumption, obesity and type 2 diabetes: a mini-reviewCoffee and Health 17 October 2006Volume 145, Issue 8Page: 634KeywordsCaffeineCoffeeCohort studiesConflicts of interestEatingGlucose metabolismGlucose toleranceTeaType 2 diabetes ePublished: 17 October 2006 Issue Published: 17 October 2006 CopyrightCopyright © 2006 by American College of Physicians. All Rights Reserved.PDF DownloadLoading ...