Bone ResorptionOsteoporosisPostmenopauseOsteoporosis, PostmenopausalBone and BonesBone DensityBone RemodelingOsteoclastsEstrogen Replacement TherapyBone Density Conservation AgentsRoot ResorptionMenopauseDiphosphonatesFractures, BoneAlendronateRANK LigandEstrogensAbsorptiometry, PhotonEstrogens, Conjugated (USP)Bone Diseases, MetabolicPremenopauseEtidronic AcidBreast NeoplasmsWomen's HealthOsteoporotic FracturesBone DevelopmentOsteoprotegerinOsteoblastsAromatase InhibitorsEstradiolOsteogenesisRisk FactorsHormone Replacement TherapyOsteocalcinFemur NeckTeriparatideParathyroid HormoneRaloxifeneBone NeoplasmsBone DiseasesIsoflavonesFemurOvariectomyAlveolar Bone LossCollagen Type INitrilesLumbar VertebraeDouble-Blind MethodReceptor Activator of Nuclear Factor-kappa BTamoxifenFractures, SpontaneousEstroneSex Hormone-Binding GlobulinSelective Estrogen Receptor ModulatorsBiological MarkersAcid PhosphataseSpinal FracturesMedroxyprogesterone AcetateTriazolesBone MatrixBone Marrow CellsCalcium, DietaryCalcitoninCathepsin KBone MarrowWomenAlkaline PhosphataseClimactericAntineoplastic Agents, HormonalFetal ResorptionCase-Control StudiesGonadal Steroid HormonesVitamin DOsteolysisRadiusTibiaSkullProgestinsOsteopetrosisNorpregnenesHot FlashesMedroxyprogesteroneBody Mass IndexPerimenopauseSpineSoybean ProteinsPhytoestrogensCohort StudiesCalciumTime FactorsTooth ResorptionAge FactorsHip FracturesNorethindroneProspective StudiesBone RegenerationCross-Sectional StudiesReceptors, EstrogenDietFollow-Up Studies