You’re chances of developing prediabetes over the course of your lifetime is about 50-50 according to research.  A large study from the Netherlands followed 10,000 adults for 15 years testing their blood sugar levels and found at age 45, about half would develop prediabetes, 30 percent full blown diabetes and nine percent would need to take insulin.  Factors accelerating the rate of developing prediabetes were increased age, body mass index (BMI), and waist circumference.