||Abstract This thesis studies gender dierences in health-related behaviour in the Czech Republic. It analyses approaches of various socio-demographic groups to smoking, drinking alcohol, performing physical activities, nutrition and stress. The cluster analysis was performed to divide the respondents into healthy and unhealthy segments. Using the principal component analysis, the risk factors were composed to create a single lifestyle variable which was further regressed on gender, age, partnership, education level and body mass index in order to nd out the eects of these characteristics on lifestyle. Besides, Logit, Pois- son and linear regressions were used to test the impacts of socio-demographic variables on individual habits. Althought it was not possible to divide the sample into healthy and unhealthy parts, both principal component analysis and individual regressions provided evidence that women live healthier. Furthermore, the analyses revealed that older and less educated people live healthier compared to the younger and more educated individuals. Living in a partnership has no signi cant eect.