OsteoporosisOsteoporosis, PostmenopausalPostmenopauseBone DensityBone Density Conservation AgentsEstrogen Replacement TherapyFractures, BoneOsteoporotic FracturesMenopauseAlendronateAbsorptiometry, PhotonDiphosphonatesBone and BonesEstrogensBone Diseases, MetabolicFractures, SpontaneousEstrogens, Conjugated (USP)Etidronic AcidBreast NeoplasmsPremenopauseTeriparatideFemur NeckRaloxifeneSpinal FracturesBone ResorptionBone RemodelingAromatase InhibitorsHormone Replacement TherapyRisk FactorsSelective Estrogen Receptor ModulatorsLumbar VertebraeEstradiolTamoxifenOvariectomyHip FracturesCalcium, DietaryEstroneNitrilesMedroxyprogesterone AcetateSex Hormone-Binding GlobulinTriazolesIsoflavonesVitamin DProgestinsAntineoplastic Agents, HormonalClimactericGonadal Steroid HormonesDouble-Blind MethodOsteocalcinCalcaneusNorpregnenesSpineFemurRadiusMedroxyprogesteronePerimenopauseCase-Control StudiesUterine HemorrhageHot FlashesWomen's HealthHipParathyroid HormoneProspective StudiesPhytoestrogensReceptors, EstrogenOsteoclastsBiological MarkersBody Mass IndexCollagen Type IOsteoblastsCalcitoninCohort StudiesAge FactorsRANK LigandSoybean ProteinsOsteogenesisEndometrial NeoplasmsNorethindroneGlucocorticoidsCross-Sectional StudiesRisk AssessmentDietary SupplementsAlkaline PhosphataseTreatment OutcomePlacebosTestosteroneEstrogen Receptor ModulatorsFollow-Up StudiesOsteoprotegerinDensitometryProgesterone CongenersRiskDietEstrogen AntagonistsIncidenceAdministration, OralAdministration, CutaneousMetacarpusMineralsQuestionnaires