Disturbances connected with nicotine lead to abuse on physical and psychological level, they are the reason of harm in individual and global perspective as well. They may be a reason of behavioural disturbances additionally. The aim of the study was to estimate the locus of health control in young adults-- students of Poznan University of Medical Sciences. Forty-six students aged 20-39 yrs. of age smoking and non-smoking participated in the study. MHLC Scale and questionnaire of own idea used in the study. Hypothesis verified with the statistical analysis test T, correlation analysis with help of SPSS program. The significance level p = 0.05 was stated as significant. The results show that most of students have internal locus of health control. The conclusion stated independently from the factor of smoking cigarettes. Respondents with smoking habits underline the influence of chance on health as well. The results confirm the data from the research studies in population of the students. The hypothesis on the lower level of internal control in people with smoking habits did not confirm in the study. However MHLC estimates as good tool for the estimation of the internal factors determining activities for health.