Effects of a Digital Health Application (Lipodia) on LDL-cholesterol Levels

Inclusion criteria * Age ≥ 18 * Diagnosis of hypercholesterolemia (ICD-10 E78.0, E78.2, E78.4, E78.5, E78.8, E78.9) confirmed by a laboratory test and physician diagnosis * LDL-C levels above risk-adapted target * TG levels \< 400 mg/dL * Stability of potential drug treatment during the last 4 weeks * Stability of potential hormonal treatment during the last 6 months * Patient was made aware of lifestyle measures by GP or specialist * Consent to participation * Sufficient knowledge of the German language Exclusion criteria * Homozygous Familial Hypercholesterolemia (FH), given that it is a genetic condition which is relatively unresponsive to lifestyle changes * Hyperlipidemia type III, given that it is a genetic condition which is relatively unresponsive to lifestyle changes * Patients receiving plasmapheresis * Lp(a) \> 50 mg/dL * current pregnancy or planned pregnancy during the study period * planned major operations * liver dysfunction * end-stage renal failure * other systemic conditions that might interfere with successful study participation * Plans to change drug (including hormonal) treatment in the upcoming 6 months * Use of another digital intervention for hypercholesterolemia/dyslipidemia in the past