Introduction: Drinking alcohol, coffee, tea and smoking tobacco products are habits of people all over the world and contain permitted psychoactive substances that do not have a specific healing value. Because these habits are part of their evolutionary and nutritional heritage, there is insufficient evidence of their harmfulness to consuming and causing addiction. Purpose: The purpose of the thesis is to determine the extent to which non-/harmful drinking habits of drinking alcohol, coffee, tea and smoking are presented among patients with internal diseases. Methods: A quantitative retrospective study is based on data from nursing care documents of adult patients with internal diseases that were gathered by nursing students in clinical training in the academic year 2013/14 and 2014/15. Data Zbirni list were processed with Microsoft Office Exel and are represented in relative and absolute frequences. Results: Data are from 228 nursing care documents of patients with internal diseases. Of this, 59 % were women, 66 % were over 60, 77 % were retired, 52 % lived in the city and 81 % had secondary education or less. Most (40 %) had cardiovascular diseases, metabolic (12 %), blood and blood forming organs (11 %) and respiratory tract diseases (10 %). No psychoactive substances were consumed by 10 % of patients with internal diseases, 63 % were drinking alcoholic beverages (54 % health harmful), 71 % coffee (1 % health harmful), and 16 % tea. 14 % of smokers were harmful to their health and 28 % were former smokers. A third of patients with cardiovascular diseases have bad habits of drinking alcohol and/or smoking. Discussion and conclusion: The results show a small number of declining health-related habits of drinking alcohol, coffee, tea and smoking among patients with internal diseases.Despite the fact that there is no evidence that their habits do not affect internal disease, it is likely that upon the occurrence of health problems to abandon the harmful drinking of alcohol and smoking. People, namely, the withdrawal of harmful habits and the creation of new life style face fears, so it would have been necessary to provide for such programmes out of these harmful health habits, as well as advice on the damaging psychoactive substances, the benefits of not eating psychoactive substances, and personal methods or strategies for the abandonment of the habits.