Inclusion Criteria:  Signed consent (general consent for research or study-specific informed consent) obtained before any study-related activities (study-related activities are any procedure related to recording of data according to the protocol). Male or female, aged 18 to 74 years (both inclusive) at the time of Saxenda® initiation. Have been prescribed Saxenda® for weight management. For the reimbursed cohort, per the Swiss reimbursement criteria: BMI greater than or equal to 35 kg/m^2 or a BMIgreater than or equal to 28 and below 35 kg/m^2 with additional weight related comorbidities (pre diabetes or T2D (Type 2 Diabetes Mellitus), hypertension, dyslipidaemia), prior to receiving the Saxenda® treatment. For the non-reimbursed cohort, BMI greater than or equal to 30 kg/m^2 or a BMI greater than or equal to 28 kg/m^2 with additional weight related comorbidities (pre diabetes or T2D, arterial hypertension, dyslipidaemia), prior to receiving the Saxenda® treatment. The decision to initiate treatment with commercially available Saxenda® has been made by the patient/legally acceptable representative (LAR) and the treating physician before and independently from the decision to include the patient in this study. Baseline weight measurement within 3 months of Saxenda® initiation/prescription. At least one weight assessment post-Saxenda® initiation/prescription.  Exclusion Criteria:  Previous participation in this study. Participation is defined as having given informed consent in this study. Treatment with any investigational drug within 30 days of Saxenda® prescription/initiation. Mental incapacity, unwillingness or language barriers precluding adequate understanding or cooperation. Concomitant treatment of Saxenda® with other GLP 1 (Glucagon-like peptide-1) receptor agonists, or orlistat. Concomitant treatment with sodium/glucose cotransporter-2 inhibitors (SGLT 2i), dipeptidyl peptidase-4 (DPP 4i), or insulin for the reimbursed cohort only. Patients who have been treated with any obesity medication for last 12 weeks prior to initiation of Saxenda® treatment. Patients who have previously been treated with a GLP 1 receptor agonist for the reimbursed cohort only. Patients who have undergone bariatric surgery at any time before starting Saxenda® treatment. Patients initiating Saxenda® treatment after 31 October 2020.