Myth: Eating too much sugar causes diabetes. 
Fact: No, it does not.  Type 1 diabetes is caused by genetics and unknown factors that trigger the onset of the disease; type 2 diabetes is caused by genetics and lifestyle factors.  Being overweight does increase your risk for developing type 2 diabetes, and a diet high in calories, whether from sugar or from fat, can contribute to weight gain.  If you have a history of diabetes in your family, eating a healthy meal plan and regular exercise are recommended to manage your weight.