What causes diabetes 1?

Antibodies: Type i diabetes is caused by antibodies that attack the insulin-producing cells in the pancreas so that they are no longer able to make insulin.

Obesity: Type 1: anti bodies attack pancreas, therefore pancreas produces very little or no insulin. However, most people have type 2 dm most often cause by obesity. Role of Insulin is to take glucose (sugar) from blood into muscles. When some has weight problem, it is like doors are closed and Insulin cannot do its job and blood sugar keeps going up.