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According to the Centers for Disease Control and Prevention, more than 37 million people in the U.S. have diabetes. That's a little more than 11% of the entire population. 

A diabetic's body doesn't make enough or any insulin at all. Those with the disease must regularly monitor their blood sugar. This has been traditionally done with glucometers, which diabetics use to prick their fingers over and over again for drops of blood. But over the last decade, technology like continuous glucose monitoring has been on the rise. 

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