Biological Aging Hallmarks-Guided Integrative TCM and Conventional Medicine in Post-Treatment Unexplained Female Infertility

Inclusion Criteria: * Biological female participants aged 25 to 42 years. * Diagnosis of infertility defined as failure to conceive after at least 12 months of unprotected intercourse and/or repeated failure of assisted reproductive technologies (ART), including intrauterine insemination (IUI) and/or in vitro fertilization (IVF). * History of post-treatment unexplained or functionally idiopathic infertility, defined as persistent infertility despite adequate correction or management of identifiable reproductive conditions (e.g., endometriosis, polycystic ovary syndrome, hormonal imbalance, uterine factors). * Eligibility for natural conception attempts and/or assisted reproductive technologies according to routine clinical practice. * Willingness to undergo biological aging biomarker profiling, including leukocyte telomere analysis. * Ability and willingness to comply with study procedures, including the preconception integrative intervention and follow-up assessments. * Provision of written informed consent prior to participation. Exclusion Criteria: * Current pregnancy or breastfeeding at the time of enrollment. * Known chromosomal abnormalities or genetic conditions directly impairing fertility (e.g., Turner syndrome). * Untreated severe male factor infertility precluding conception by natural or standard ART methods. * Active malignancy or history of cancer requiring systemic treatment within the past 5 years. * Severe systemic disease or medical condition contraindicating pregnancy or participation in ART (as determined by the treating physician). * Use of investigational drugs or participation in another interventional clinical trial that could interfere with the study outcomes. * Known hypersensitivity or contraindication to components of the integrative intervention, as determined by clinical assessment. * Any condition which, in the opinion of the investigator, would interfere with safe participation or interpretation of study results.