Korean medicine improves overall body condition for natural conception. Effects: ① egg quality improvement, ② endometrium thickening, ③ ovulation regulation, ④ stress reduction, ⑤ male sperm quality improvement. Reported pregnancy rates: 30–50% within 6–12 months for unexplained/mild infertility cases. Combined with IVF/IUI improves outcomes by 20–30%. Both partners should be evaluated and treated together for best results.