The researchers aimed to investigate the relationship between ABO blood types and erectile dysfunction.

This retrospective study is done in Ordu university Hospital among patients who administered to urology polyclinic between April 2013 and April 2014. Sexually active 102 patients whose blood types were known were included in this study. While 56 patients had sexual intercourse problems 46 had not and this group was taken as a control group. Individuals who had a sexual partner and whose sexual intercourse were continuing unproblematic ally were accepted as normal. Individuals who had not have sexual intercourse though having a sexual partner or unable to maintain the intercourse were accepted to have sexual dysfunction. Patients' sexual function was evaluated via the İEFF-5 questioning form. In the same session the patients' blood types were also recorded and their İEFF-5 (Erectile Function International Evaluation Form) symptom scores were compared with their blood types.

Inclusion Criteria:

• Male, person who have sexual intercourse

Exclusion Criteria:

• Female, who have no sexual intercourse

Administered to urology polyclinic between April 2013 and April 2014. Sexually active 102 patients whose blood types were known were included in this study.