Figure 1From: Acute effects of decaffeinated coffee and the major coffee components chlorogenic acid and trigonelline on incretin hormonesMean (± SE) plasma concentrations of total GLP-1 (A), intact GLP-1 (B) and GIP (C) before and throughout an OGTT, following ingestion of chlorogenic acid, decaffeinated coffee, trigonelline and placebo in 15 healthy overweight men. Figure (A): At t = 0 decaffeinated coffee increased total GLP-1 concentration relative to placebo (p = 0.03).Back to article page