comparative investigation of serum vitamin d level inwomen with unexplained and male factor infertility

Background: a high prevalence of vitamin d deficiency exists in iranian people. vitamin d plays a significant role in the pathogenesis of infertility. objectives: this study aimed to compare the serum levels of vitamin d in women with unexplained and male factor infertility admitted to the infertility center of the ali ibn-e abitaleb hospital, zahedan, iran, in 2018. methods: this case-control study was performed on 155 women in two groups: a case group consisting of 105 women with unexplained infertility and a control group consisting of 50 women with male factor infertility admitted to the ali ibn-e abitaleb hospital. blood samples were taken from all the subjects and sent to the laboratory to determine the vitamin d level. descriptive statistics, including frequency, percentage, mean, and standard deviation were used to describe the data. also, the mean serum vitamin d level was determined using an independent t-test and the mann-whitney u test, and the rate of p < 0.05 was considered significant. results: the results showed that vitamin d levels were significantly lower in the case group than in the control group (p < 0.001). the mean vitamin d level was 23.68 ± 6.88 in the case group and 10.90 ± 11.11 in the control group. conclusions: the vitamin d level was lower in women with unexplained infertility than in women with male factor infertility. therefore, measures need to be taken to prescribe vitamin d supplementation to infertile women.