Keyora Soy Isoflavone in Hormonal, Neurovascular, and Metabolic Dysregulation: An Integrative Nutritional Framework for Menopausal and Perimenopausal Syndromes, PMS/PMDD, PCOS, Menstrual Migraine, Dysmenorrhea, and Osteoporosis Mechanistic Insights into ER-β Regulation, Serotonin–Melatonin Axis Stabilization, Nrf2–Antioxidant–Endothelial Coupling, and Multi-Nutrient Synergy for Neuro-Endocrine-Metabolic Rebalancing 0009-0007-5798-1996 DOI: 10.5281/zenodo.17559061
