Faced with the finding that uncompensated diabetes leads to the development of comorbidities in the medium and long term and that the associated costs to the SUS will be greater than the costs of prevention through the use of continuous monitoring systems, we investigated how the use of the FreeStyle® Libre system in SUS patients impacts diabetes parameters in patients who receive education in the proper administration of insulin and the use of a continuous monitoring device and patients, as well as the impact on patients without any concomitant multidisciplinary support in Sergipe, Brazil. The gene discussed is INS; the disease is diabetes mellitus.