The Short Version
This claim is false. Medical evidence consistently shows that male and female factors each account for roughly one-third of infertility cases, with the remaining third involving both partners or unknown causes. The higher female infertility statistics sometimes cited reflect a well-documented surveillance bias—infertility has historically been tracked and diagnosed through women, leading to systematic underdiagnosis of male infertility. The WHO, NICHD, and multiple clinical sources confirm there is no basis for attributing infertility "primarily" to women.