Diabetes is a disease characterized by a significant increase in blood glucose levels (hyperglycemia ), whose symptoms are usually fatigue, emaciation produced in a short time, excessive thirst and urination extreme ( even at night ). This pathology is caused by an alteration of the action of insulin, either because it does not exist or because the patient's pancreas no longer make it. This last case is what causes diabetes mellitus or insulin-dependent (type I diabetes), which appears in childhood. In the case of people with diabetes type I, substitute this lack of insulin treatment to be followed for life, proper diet that allows greater control of blood glucose levels throughout the day and about good habits of physical exercise. In contrast, type II diabetes is a consequence of hypertension, high cholesterol, obesity, among other causes. Requires more control over diet that is done and sometimes treatment with oral antidiabetic (pills ). Besides, during gestation can also see the unbalanced blood glucose levels, which causes the called gestational diabetes.