Forecasting and Preventing Post-Bariatric Hypoglycaemia WP 1

Inclusion Criteria: * Post-bariatric surgery patients (Roux-en-Y gastric bypass) with PBH, defined as postprandial plasma or sensor glucose \<3.0 mmol/L according to the International Hypoglycaemia Study Group and exclusion of other causes of hypoglycaemia * Age ≥18 years Exclusion Criteria: * Inability to give informed consent as documented by signature * Pregnant or lactating women * Inability or contraindications to undergo the investigated intervention * Drugs interfering with blood glucose (e.g. SGLT-2 inhibitors, acarbose) during the time of investigation * Inability to follow the procedures of the study, e.g. due to language problems, psychological disorders, dementia, etc.