Sugar has an indirect link to diabetes
Dr. Jennifer Haythe, a cardiologist at Columbia Presbyterian Hospital in New York explained, "eating sugar does not cause diabetes; it's a complicated problem involving your pancreas and metabolism. When you have diabetes, you don't produce enough insulin. Insulin helps the glucose get absorbed into your bloodstream and liver as usable energy."
While sugar itself cannot cause diabetes, and the process or getting diabetes is a complex amalgamation, you are at a higher risk of developing diabetes if you are either overweight or obese. This is because added fat can increase insulin resistance. Of course, those who have an overly high sugar intake are more at risk for being overweight or obese, meaning that sugar can be an indirect cause of diabetes, according to the National Institute of Diabetes and Digestive Kidney Diseases.