By questioning 23 donor-recipient-pairs before and after a kidney donation, this study examines the effects a living kidney donation has for donors as well as recipients in regard to the physical and psychosocial life, the quality of relationships, self-contentment and quality of life. 6 selfassessment-questionnaires (B-L, SCL-90-R, F-SOZU, questionnaire concerning relationships, SF-36, questionnaire concerning self-contentment) were used and semi-structured-interviews of 30-60 minutes were conducted. Postoperative there was a moderate increase of mental and physical stress, weakening of relationships and decline of social support. In contrast the psychosocial strain decreased. The postoperative data are comparable to the German reference group.