Meta-analysis of the relevance between sperm parameters and serum vitamin D levels in infertile men

To systematically estimate the relevance between sperm parameters and serum vitamin D levels subsequent reproductive outcomes in men. PubMed, Web of Science other databases were searched for studies that examined a possible correlation outcomes. The documents screened according to corresponding inclusion exclusion criteria. Selection criteria included all published randomised controlled trials non-randomised focus on function men patients classified into observation/intervention control groups, intervention group was given supplementation not. meta-analysis conducted using Stata 16.0 software. A 11 clinical enrolled total 1356 patients, revealed pregnancy rate observation no statistically different group. 8 demonstrated there difference concentration experimental found progressive motility greater than by random-effects model. mean significantly lower Appropriate supplement infertile improves motility. Interpretation these results should be done with caution due significant heterogeneity studies. Furthermore, Well-conducted prospective cohort are needed better explain relationship