Decaf Impairs Glucose Metabolism

Decaf Impairs Glucose Metabolism: Some types of decaffeinated coffee may acutely impair glucose metabolism but less than caffeine. The results showed that, within the first hour of the OGTT, glucose and insulin were higher for decaffeinated coffee than for placebo (P < 0.05). During the whole OGTT, decaffeinated coffee yielded higher insulin than placebo and lower glucose and a higher insulin sensitivity index than caffeine. See this week's Item #9.