Prolesan Pure re are basically two types of diabetes, Type I and Type II. Type I is essentially an autoimmune disease, where the body actually attacks the cells in the pancreas that produce insulin. Type II diabetes is adult onset diabetes. This form of diabetes is caused by overweight and physical inactivity, among other causes. Type II diabetes accounts for 90% to 95% of diabetes cases. It's this type of diabetes that is most affected by Weight Loss.