Acute kidney failure represents a major public health problem and is associated with high rates of morbidity, mortality and healthcare costs. It can occur at any age and the prevalence is higher in underdeveloped countries. The underlying causes of acute kidney failure are divided into prerenal, intrarenal or intrinsic, and postrenal causes, and the treatment differs depending on the cause. Chronic kidney failure affects about 10-20% of the world's population and is considered one of the leading causes of death from non-communicable diseases. It occurs more often in the elderly people, African-Americans, as well as in people suffering from diabetes and hypertension. Symptoms may include nausea, fatigue, weakness, loss of appetite, muscle cramps, edema. The recommended guidelines that people suffering from chronic kidney disease should follow are: maintenance of adequate body weight, regulation of GUK, adapted diet, appropriate physical activity and regular therapy. For people suffering from acute or chronic kidney failure, it is recommended to change their eating habits, to control the intake of sodium, potassium and phosphorus. As part of this final thesis, a study was conducted that aimed to assess the level of knowledge of the general population about the nutrition of patients with acute and chronic kidney failure. The survey questionnaire was conducted using an online Google forms survey in the period from November 6, 2023. until December 15, 2023. year. The general population showed good information about acute and chronic kidney failure and about nutrition.