Introduction. Ability and readiness to talk with patients about sexual problems not only depend on education in sexual physiology and pathology, but also on the doctors' beliefs and attitudes towards sexuality. Considering importance of these matters, the authors decided to collect and evaluate the data regarding attitudes and cognitive schemata of medical students. Aim. Analysis of selected convictions and attitudes towards sex life of IV-th grade students of medicine. Methods. There was self-report Questionnaire on Satisfaction with Sexual Life (KSS2) applied. Medical students filled-out the questionnaire when attending the courses of Psychopathology of neurotic disorders or Psychotherapy. Results. Analysis of the collected data revealed differentiation of the studied group in regard of beliefs and attitudes towards sex life, dialogue about sex in erotic relationships, and seeking for professional help. Regarding some aspects, significant differences between women and men occurred. The following factors, which may negatively influence medical doctor's competencies in domain of sexual health, were identified: discomfort considering their own sexuality, avoidance of sexual drive, negative moral judgment of sexual activity. Conclusions. Assessment of influence of students' and doctors' own sexuality on their competencies in diagnostics and treatment requires further studies. There is a clear indication to look for the means for prophylaxis and correction of ineffective attitudes and convictions of future doctors', as professional sexual education or interpersonal trainings.