The investigator examines of the impact of digital training on the sodium, potassium and phosphate content of various foods in dialysis patients. The training takes place visually as self-study in the form of a computer-based application.

The working hypothesis is that trained dialysis patients have consistently better plasma electrolyte values than untrained participants.

Inclusion Criteria:

• Dialysis Patient

Exclusion Criteria:

• Pregnancy
• Not preparing own meals