Type 1 diabetes requires a high level of involvement of patients to obtain good control by following complex therapeutic recommendations. Motivational Interviewing has proven to be effective in changing behaviors in sedentary people, with addictions and with obesity.

Our objective is to evaluate the impact of an intervention with Motivational Interviewing in patients with type 1 diabetes, through a randomized controlled clinical trial. At least sixty patients with type 1 diabetes will be included with HbA1c> 8% that will be randomized with a ratio of 1: 1. In the intervention group, Motivational Interviewing will be applied in the routine clinical appointments with the Endocrinologist, while the control group will receive the same visits but in a traditional way.

The primary result will be self-care behaviors according to a validated questionnaire. Secondary outcomes include: HbA1c, number of hypoglycemia, motivation with self-care, self-efficacy, quality of life, compliance with patients' own objectives, lipid profile, weight and blood pressure.

The professionals will be trained in Motivational Interviewing with the objective of favoring the adherence to self-care, the motivation of the patient and improving doctor-patient relationship. They will also be evaluated through a specific questionnaire.

Inclusion Criteria:

• Patients with DM1 seen in outpatient clinics of Endocrinology and Nutrition with at least one year of evolution, HbA1c> 8% and / or severe hypoglycemia in the previous 6 months

Exclusion Criteria:

• Gestion underway or scheduled for the next 9 months. Any circumstance that, in the opinion of the investigators, could interfere with the follow-up of the patient.

Anonimized results will be available upon request

Protocol and statistical plan: as son as posible Access to results. Upon publication

Study protocol and statistical analysis plan will be published (draft in progress) Individual data/results (anonimized) will be available upon request