INS and hyperinsulinism: It is important to stress that the glucose-insulin index provides more information than the simple fasting glucose, such as relative hypoglycemia or in absolute values - delayed insulin peak, hyperinsulinemia and hypoinsulinemia, and the early diagnosis of these alterations and the institution of a proper diet can prevent diabetes and its complications to set in16, 18, 21, 22, besides improving neurotological symptoms.8