If a person have diabetes should he go to a endocrinologist or a dietitian ?want to know which is more needed

It depends: The third person to consider in type II diabetes is the fitness trainer. You always want a physician's direction. Type I diabetes has an absolute insulin lack, and a physician or endocrinologist is required. For type II diabetes, some dietary education is helpful; weight reduction and planning meals will help manage the disease, though medication and exercise are also key. Best wishes.

Both.: People who have diabetes need to take medications and undergo rather drastic lifestyle changes - regular exercise, meal content, meal timing, attention to glycemic index, relation of diet and exercise to blood sugar and medication dose/timing.