Basically, there are two types of diabetes, type 1 and type 2 diabetes. Type 1 diabetes is called as insulin dependent diabetes which comes in young adults or children, whereas type 2 diabetes is non-insulin dependent diabetes. There are many causes for diabetes to occur like environmental factor, food habits, stress, and due to some drugs also. In type 2 diabetes, hereditary is one of the cause for diabetes to happen. Yes, hereditary can cause diabetes and if one parent has the history of diabetes , so the child or the next generation to get is 50% chances are there if both parents have diabetes is there is high chances of diabetes to come in the offspring.