Diabetes Intervention Involving Person-centred Nutritional Education

Inclusion Criteria: * Type 1 Diabetes. * Diabetes duration for more than 12 months at screening. * Adults 18 years or older. * HbA1c more than 57mmol/mol. * Use of continuous glucose monitoring (CGM) sensor for more than three months at screening and during the study period. * Use of basal and bolus insulin regimen for more than three months at screening and during the study period. * Written Informed Consent. Exclusion Criteria: * Women of childbearing potential: ongoing pregnancy or planned pregnancy during the study period. * Cognitive impairment or other disease that study physician find non-compatible with participation. * Planned change in glucose lowering treatment during study period (change of mealtime insulin analogue with same pharmacodynamic profile allowed). * Planned change of CGM sensor during the study. * Food allergies or intolerances that are incompatible with adhering to Nordic nutrition recommendations. * Current or planned treatment with corticosteroids during the study (other than for replacement therapy).