The study that was published in The American Journal of Clinical Nutrition took a look at 4,522 female participants who had a history of gestational diabetes mellitus (GDM). Keeping track of those involved from 1991–2017, checks were done every two to four years in order to note various factors such as lifestyle habits, diet—including caffeinated and decaffeinated coffee consumption, demographic, and disease. Beyond that, blood samples were taken from participants who didn’t have diabetes between 2012–2014 and analyzed for glucose metabolism biomarkers.
During the study, it was found that 979 of the participants had developed type 2 diabetes. The results also showed that regularly drinking caffeinated coffee was associated with a reduced risk of type 2 diabetes.
“The study is interesting and important because it shows that coffee can have a positive impact on the lives of women, who are more likely to develop type 2 diabetes,” Amber Dixon, CEO, dietitian, and geriatric nurse at Elderly Assist Inc., tells Eat This, Not That! “It’s possible that caffeine has a different effect on women than men, which would make sense given the findings of this study.”
“The active ingredient in coffee is caffeine, a stimulant that can help to lower blood sugar levels. This is because caffeine blocks adenosine receptors in the brain, which lowers insulin levels and increases glucose absorption,” Dixon explains, when it comes to how caffeinated coffee can potentially help to prevent diabetes.