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Jacobs, S.* ; Kröger, J.* ; Floegel, A.* ; Boeing, H.* ; Drogan, D.* ; Pischon, T.* ; Fritsche, A. ; Prehn, C. ; Adamski, J. ; Isermann, B.* ; Weikert, C.* ; Schulze, M.B.*

Evaluation of various biomarkers as potential mediators of the association between coffee consumption and incident type 2 diabetes in the EPIC-Potsdam study.

Am. J. Clin. Nutr. 100, 891-900 (2014)
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BACKGROUND: The inverse association between coffee consumption and the risk of type 2 diabetes (T2D) is well established; however, little is known about potential mediators of this association.OBJECTIVE: We aimed to investigate the association between coffee consumption and diabetes-related biomarkers and their potential role as mediators of the association between coffee consumption and T2D.DESIGN: We analyzed a case-cohort study (subcohort: n = 1610; verified incident T2D cases: n = 417) nested within the European Prospective Investigation into Cancer and Nutrition-Potsdam study involving 27,548 middle-aged participants. Habitual coffee consumption was assessed with a validated, semiquantitative food-frequency questionnaire. We evaluated the association between coffee consumption and several T2D-related biomarkers, such as liver markers (reflected by γ-glutamyltransferase, fetuin-A, and sex hormone-binding globulin), markers of dyslipidemia (high-density lipoprotein cholesterol and triglycerides), inflammation [C-reactive protein (CRP)], an adipokine (adiponectin), and metabolites, stratified by sex.RESULTS: Coffee consumption was inversely associated with diacyl-phosphatidylcholine C32:1 in both sexes and with phenylalanine in men, as well as positively associated with acyl-alkyl-phosphatidylcholines C34:3, C40:6, and C42:5 in women. Furthermore, coffee consumption was inversely associated with fetuin-A (P-trend = 0.06) and CRP in women and γ-glutamyltransferase and triglycerides in men. Coffee consumption tended to be inversely associated with T2D risk in both sexes, reaching significance only in men [HR (95% CI): women: ≥4 compared with >0 to <2 cups coffee/d: 0.78 (0.46, 1.33); men: ≥5 compared with >0 to <2 cups coffee/d: 0.40 (0.19, 0.81)]. The association between coffee consumption and T2D risk in men was slightly reduced after adjustment for phenylalanine or lipid markers.CONCLUSIONS: Coffee consumption was inversely associated with a diacyl-phosphatidylcholine and liver markers in both sexes and positively associated with certain acyl-alkyl-phosphatidylcholines in women. Furthermore, coffee consumption showed an inverse trend with CRP in women and with triglycerides and phenylalanine in men. However, these markers explained only to a small extent the inverse association between long-term coffee consumption and T2D risk.
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Publication type Article: Journal article
Document type Scientific Article
Corresponding Author
Keywords Hormone-binding Globulin; Randomized Controlled-trial; Nutrition (epic)-potsdam; Decaffeinated Coffee; Relative Risk; Blood-lipids; Japanese Men; Serum-lipids; Women; Mellitus
ISSN (print) / ISBN 0002-9165
e-ISSN 1938-3207
Quellenangaben Volume: 100, Issue: 3, Pages: 891-900 Article Number: , Supplement: ,
Publisher American Society for Nutrition
Publishing Place Bethesda
Non-patent literature Publications
Reviewing status Peer reviewed