PostmenopauseEstrogensOsteoporosis, PostmenopausalEstrogen Replacement TherapyReceptors, EstrogenEstrogens, Conjugated (USP)MenopauseEstradiolEstrogen Receptor alphaBreast NeoplasmsBone DensityPremenopauseWomen's HealthAromatase InhibitorsEstrogen Receptor betaTamoxifenEstroneHormone Replacement TherapySelective Estrogen Receptor ModulatorsIsoflavonesMedroxyprogesterone AcetateRisk FactorsSex Hormone-Binding GlobulinBone Density Conservation AgentsTriazolesNitrilesProgestinsAntineoplastic Agents, HormonalOvariectomyGonadal Steroid HormonesDouble-Blind MethodRaloxifeneWomenMedroxyprogesteronePhytoestrogensClimactericHot FlashesNorpregnenesOsteoporosisCase-Control StudiesAbsorptiometry, PhotonFractures, BonePerimenopauseSoybean ProteinsAlendronateNorethindroneBody Mass IndexReceptors, ProgesteroneAdministration, CutaneousCohort StudiesProgesterone CongenersFemur NeckTestosteroneEndometrial NeoplasmsAromataseDehydroepiandrosterone SulfateCross-Over StudiesBone and BonesProspective StudiesPlacebosNeoplasms, Hormone-DependentEstrogens, CatecholHydroxyestronesEstrogens, Non-SteroidalAge FactorsUterine HemorrhageBiological MarkersCross-Sectional StudiesDietEtidronic AcidEndometriumTeriparatideAndrostenedioneFollow-Up StudiesIncidenceRiskEquolOsteoporotic FracturesDehydroepiandrosteroneProgesteroneSoy FoodsEndometrial HyperplasiaVaginaBreastObesityQuestionnairesTime FactorsDietary SupplementsBone ResorptionIowaSpinal FracturesCalcium, DietaryEstrogen AntagonistsRisk AssessmentHysterectomyMammographyTreatment OutcomeEstrogen Receptor ModulatorsBone Diseases, MetabolicLumbar Vertebrae