Prevalence and Causes of Infertility in Iran Com-parison with other Parts of The Word

Background: Infertility is a common problem in couples and is now viewed as a global reproductive health issue. The causes of infertility vary widely, between countries and within the coun-try. Environmental and geographical factors can affect women and men s infertility. The purpose of this study is to determine the prevalence and causes of infertility in Iran in comparison with other parts of the world.Materials and Methods: This review study was conducted by searching articles from 2015 to 2019 in Persian and English in Scientific Direct, Googlescholar, pubMed and SID databases. The keywords used are infertility , prevalence , causes and similar words. Review articles and non-epidemiological studies were excluded from this study.Results: Infertility prevalence was about 5 to 17.5% in dif-ferent areas of Iran.Primary infertility incidence was60-70% and the secondary infertility incidence was 30-35%. The most prevalent cause of infertility in women was found to be in rela-tionship with ovarian factors (33.5%) and menstruation disor-ders. Abnormal semen parameters was Infertility was signifi-cantly correlated with age, educational level, body mass index, waist circumference, history of abortion, smoking and family history of infertility. Infertility prevalence was about 14% in other countries such as China and Nigeria. Primary infertility incidence was 13-24%% and the secondary infertility incidence was 34-38%. Tubal factor was the predominant cause of infer-tility cases among the women. Women with a history of vaginal discharge, puerperal sepsis, induced abortion and pelvic sur-gery were more likely to have tubal factor infertility.Conclusion: Infertility is a common presentation in the clinics and the secondary type is predominant in this setting. The cause of infertility most commonly identified in the studied iranian population was ovarian factors and menstruation disorders.