Effects of 16-Week Consumption of Caffeinated and Decaffeinated Instant Coffee on Glucose Metabolism in a Randomized Controlled Trial

<table>Caffeine concentrations (<i>μ</i>M) in saliva collected at unannounced visits in the first 8 weeks (a) and the second 8 weeks (b) during the intervention.</table>

Journal of Nutrition and Metabolism

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Figure 2

Figure 2: Effects of 16-Week Consumption of Caffeinated and Decaffeinated Instant Coffee on Glucose Metabolism in a Randomized Controlled Trial 