Diabetes in Europe. Conceptual image of human figures on a map of Europe, with formulas representing diabetes prediction models. The factors in the models include gender, waist circumference, blood pressure, age, ethnicity, family history, smoking history, and body mass index (BMI). Diabetes is a condition where the body is resistant to or fails to produce the insulin needed to break down sugars in the blood. Insulin can be injected to lower the blood sugar to normal levels.