The authors submit results of three years' research which provided data on motivations leading to interest in medical studies among students. The results obtained by questionnaires from 304 respondents mention in the first place from a total of 30 identified elements interest in human biology, the functional influence of the family and emotional aspects. Confrontation of motivation with the achieved classification results during examinations revealed that the best mean marks are achieved by students motivated to medical studies by humanity, efforts to acquire more knowledge and active work in the Red Cross while still at primary and secondary school. In the respect women predominate. Less favourable average marks were recorded in those motivated by subjective motives and undefined interest. The assembled findings can be used in the process of education and training by aimed differentiation of the teaching process.