In previous studies, coffee consumption has been associated with a lower risk of type 2 diabetes, but the underlying mechanisms remain unclear. The aim of this newly published study was to evaluate the effects of regular and decaffeinated coffee on biological risk factors for type 2 diabetes.
45 healthy overweight
volunteers (who were nonsmokers and regular coffee
consumers) were randomized into a parallel-arm intervention trial. Participants were assigned to consumption of 5 cups (177
mL each) per day of instant caffeinated coffee, decaffeinated
coffee, or water (as the control group) for 8 weeks.
In comparison to the water group, results revealed that caffeinated coffee was associated with a 60% decrease in a compounded called IL-6 (affects glucose homeostasis and metabolism directly and indirectly). Levels of adiponectin (a compound that's important for insulin sensitivity) also decreased in the caffeinated coffee group, but not the decaffeinated or water groups.
...so let's go for coffee.
Source: Effects of caffeinated and decaffeinated coffee on biological risk factors for type 2 diabetes: A randomized controlled trial
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