Cardiovascular diseases (CVD) are the leading cause of death in the world. CVD is a chronic illness that develops trough the entire lifetime and is commonly caused by lifestyle factors. There are a number of risk factors that affect the development and progression of cardiovascular disease, and those which can be affected by changes in lifestyle are arterial hypertension, dyslipidemia, obesity, physical inactivity, diet, and smoking. Lifestyle changes may stop the progression of CVD and research shows that dietary changes may even reverse the disease. The main goal of this paper is to determine dietary patterns and the level of knowledge on nutrition of CVD patients. For that purpose, a validated questionnaire for physical activity and level of knowledge were used, as well as a validated Food frequency questionnaire (FFQ). The results of 52 anonymous surveys suggest that respondents are aware that diet has an impact on their disease, however most of them don't follow dietary guidelines. Most of the respondents consume significantly higher amounts of salt and cholesterol than recommended, while their intake of fruit and grains is lower than recommended. As many as 80% of respondents are overweight or obese, and almost half are smokers. Therefore, it is necessary to further promote the importance of proper nutrition in the prevention and treatment of cardiovascular disease and to involve nutritionists more actively in the care of people with cardiovascular disease not only at the level of secondary and tertiary but also primary health care.