AMH and polycystic ovary syndrome: Developed according to SANRA (Scale for the Assessment of Narrative Review Articles) principles, a structured search of PubMed, Scopus, and Web of Science (English language; inception-30 September 2025) was conducted, using fertility-related terms (e.g., fertility, ovulation, IVF/ART, AMH, PCOS, pregnancy, live birth, time to conception) combined with bariatric surgery terms (SG/VSG, RYGB, metabolic/bariatric surgery, and weight loss surgery).