As a result there has been a sharp increase in the number using birth control pills or inserting birth control devices. The former may lead to an inability to restore ovulation in some women, while the latter can easily lead to pelvic infection or produce scars in the oviduct, creating blockages and infertility.
服用避孕藥、裝置避孕器的人數於是大增，而前者會導致某些婦女無法恢復排卵，後者則易造成骨盆感染，輸卵管產生疤痕、阻塞，均會導致不孕。