Inclusion Criteria:  Type 1 diabetes ≥ 18 years old Hb1Ac<12%  Exclusion Criteria:  Patient without continuous glucose monitoring system Disease other than diabetes (bulimia, anorexia…) Dialysis patient Known history of drug or alcohol abuse Patient under judicial protection Person deprived of liberty Pregnant, parturient or breastfeeding woman Patient in psychiatric care Patient admitted to a health or social institution for purposes other than research Any reasons that might interfere with the evaluation of the study objectives