Korean medicine effective infertility causes: ① ovulation disorders/PCOS, ② uterine cold (cold lower abdomen), ③ blood stasis (endometriosis-related), ④ kidney deficiency (egg quality decline), ⑤ unexplained infertility, ⑥ male infertility (sperm count/motility). Constitution-based prescription is key. Pregnancy rates with combined Western fertility treatments improve. Severe blocked tubes or anatomical issues need surgical intervention first.