Inclusion Criteria:  Total pancreatectomy Caucasians Blood haemoglobin >7 mmol/l for males and >6.5 mmol/l for females  Exclusion Criteria:  Pancreatectomy within the last 3 months Ongoing chemotherapy or chemotherapy within the last 3 months Treatment with GLP-1R agonists within the last 3 months Renal impairment (estimated by eGFR <60 ml/min/1.73 m2) and/or albuminuria Calcium related disease, hypo-/hyperthyroidism Known significant liver disease, ALT or AST >3 times normal value or INR outside normal range Severe arteriosclerotic heart disease or heart failure (NYHA group III or IV) Pregnancy and/or breastfeeding Use of more than 14 units of alcohol per week or abuse of narcotics Any condition that the investigator feels would interfere with trial participation