DementiaVitamin DVitamin D DeficiencyVitamin AVitaminsDementia, VascularCholecalciferolVitamin EVitamin B 12Receptors, CalcitriolVitamin A DeficiencyCalcifediolCalcitriolErgocalciferolsDietary SupplementsVitamin D-Binding ProteinVitamin K 1SunlightAlzheimer DiseaseVitamin B 6Vitamin B 12 DeficiencyVitamin E DeficiencyRicketsDementia, Multi-Infarct25-Hydroxyvitamin D3 1-alpha-HydroxylaseHydroxycholecalciferolsVitamin K DeficiencyLewy Body DiseaseParathyroid Hormone25-Hydroxyvitamin D 2Vitamin B 6 DeficiencyAIDS Dementia ComplexCognition DisordersVitamin D Response ElementAscorbic AcidNeuropsychological TestsCalcium, DietaryDihydroxycholecalciferols24,25-Dihydroxyvitamin D 3Cholestanetriol 26-MonooxygenaseDietRisk FactorsCalciumVitamin K 2OsteomalaciaPyridoxineNutritional StatusSteroid HydroxylasesCaregiversBone Density Conservation AgentsBone and BonesSeasonsBone DensityNursing HomesBrainAvitaminosisPhosphorusAtrophyPrevalenceCognitionNutritional RequirementsVitamin B DeficiencyMild Cognitive ImpairmentCohort StudiesAgingLongitudinal StudiesProspective StudiesFood, FortifiedCross-Sectional StudiesCase-Control StudiesAntioxidantsHypocalcemiaFolic AcidVitamin K 3Hyperparathyroidism, SecondaryBiological MarkersNutrition PolicyHypercalcemiaOsteoporosisLewy BodiesParkinson DiseaseVitamin K Deficiency BleedingDouble-Blind MethodGeriatric AssessmentHomes for the AgedSeverity of Illness Indexbeta Carotenealpha-TocopherolFollow-Up StudiesSkin Pigmentationtau ProteinsMemory DisordersApolipoprotein E4Age FactorsFrontotemporal Lobar DegenerationNeurofibrillary TanglesPick Disease of the BrainTime FactorsOsteocalcinIntestinal Absorption