PT - JOURNAL ARTICLE AU - van Dijk, Aimée E. AU - Olthof, Margreet R. AU - Meeuse, Joke C. AU - Seebus, Elin AU - Heine, Rob J. AU - van Dam, Rob M. TI - Acute Effects of Decaffeinated Coffee and the Major Coffee Components Chlorogenic Acid and Trigonelline on Glucose Tolerance AID - 10.2337/dc09-0207 DP - 2009 Jun 01 TA - Diabetes Care PG - 1023--1025 VI - 32 IP - 6 4099 - http://care.diabetesjournals.org/content/32/6/1023.short 4100 - http://care.diabetesjournals.org/content/32/6/1023.full SO - Diabetes Care2009 Jun 01; 32 AB - OBJECTIVE Coffee consumption has been associated with lower risk of type 2 diabetes. We evaluated the acute effects of decaffeinated coffee and the major coffee components chlorogenic acid and trigonelline on glucose tolerance. RESEARCH DESIGN AND METHODS We conducted a randomized crossover trial of the effects of 12 g decaffeinated coffee, 1 g chlorogenic acid, 500 mg trigonelline, and placebo (1 g mannitol) on glucose and insulin concentrations during a 2-h oral glucose tolerance test (OGTT) in 15 overweight men. RESULTS Chlorogenic acid and trigonelline ingestion significantly reduced glucose (−0.7 mmol/l, P = 0.007, and −0.5 mmol/l, P = 0.024, respectively) and insulin (−73 pmol/l, P = 0.038, and −117 pmol/l, P = 0.007) concentrations 15 min following an OGTT compared with placebo. None of the treatments affected insulin or glucose area under the curve values during the OGTT compared with placebo. CONCLUSIONS Chlorogenic acid and trigonelline reduced early glucose and insulin responses during an OGTT.