Time-restricted Feeding in MASLD

Inclusion Criteria: * 18 and 75 years * Body mass index (BMI) \> 25 kg/m² * MASLD grade 3 with CAP ≥ 280 dB/m, excluding liver damage * Liver stiffness \< 13 kPa * Ability to understand the study and the individual consequences of participating in the study * Signed and dated consent form before the start of any study activity Exclusion Criteria: * Hepatocellular carcinoma or non-curatively treated carcinomas * Alcohol consumption \>20 g (women) and \>30 g (men) per day * Other liver diseases (HBV, HCV, HDV, HEV, HIV), autoimmune diseases or chronic cholestatic liver disease, hereditary haemochromatosis, Wilson's disease, α-1-antitrypsin deficiency * Medications that cause liver disease or secondary NAFLD (e.g. tamoxifen, systemic corticosteroids, methotrexate, tetracyclines, oestrogens, valproic acid) * Body weight changes of \> 5% in the last 6 months * Statins and/or other lipid-lowering drugs, if these have not been taken in a stable dose for at least 4 weeks * Uncontrolled type 2 diabetes defined as HbA1c value \> 9.0% or insulin-dependent type 2 diabetes * Pregnancy * Immunological or inflammatory diseases (e.g. systemic lupus erythematosus) * Following a restrictive, special diet * Patients who have undergone organ transplants * Lack of or absence of capacity to give consent