Inclusion Criteria:  Body mass index >28kg/m2 Age 60-84 years Established risk factor for developing heart failure, defined as at least one of the following: hypertension ischemic heart disease stroke/transient cerebral ischemia chronic kidney disease (eGFR 30-45ml/min/1.73m2)  Exclusion Criteria:  Diabetes mellitus type 1 or 2 (no medical history, no antidiabetic treatment) Heart failure with reduced ejection fraction (LVEF <40%) Inability to perform exercise test Dementia Severe non-compliance Substance abuse Severe chronic obstructive pulmonary disease (FEV1<50% expected value) Permanent atrial fibrillation GFR <30 ml/min/1,73m2 Severe peripheral artery disease Cancer treatment within one year beside prostate cancer and basal cell carcinoma Severe aortic or mitral valve disease Pregnancy or breastfeeding Acute hospital admission within 30 days Participation in other pharmacological study