Inclusion Criteria:  BMI ≤ 35 kg/m2 Essential hypertension eGFR > 15 ml/min/1,73m2 Albumine-to-creatinine-ratio < 500 mg/g Safe anticonception if women in childbearing age. Able to adhere to dietary regimen  Exclusion Criteria:  Secondary hypertension Clinically significant heart failure (NYHA 3-4) Clinically significant liver disease Diabetes mellitus (type 1 and 2) Active cancer (except skin cancer) Renal transplant Recent stroke, transcient ischemic attack or myocardial infarction (within 6 months) Proliferative glomerulonephritis or ANCA-related disease Continuous immunosuppressant treatment Pregnancy or lactation Alcohol abuse If the investigator finds the participant unfit to complete the project