The complexity of studying a state of health is in the fact that a great variety of. needs, which are sometimes disputed, lays in the basis of teenager's health behaviour. Thus the major part of behaviour types, influencing health, is caused by the motives which are often not directly connected with health. In the research the authors have car-ried out the analysis of the parameters characterizing teenager's attitude to his health. The parameters are the following: self-estimation of health, medical knowledge, place of health in the system of life values, presence of harmful habits, ecological purposes, stress factors, physical activity.