Vitamin DVitamin D DeficiencyVitamin AVitaminsCholecalciferolVitamin EVitamin B 12Receptors, CalcitriolVitamin A DeficiencyCalcifediolProtein PrecursorsCalcitriolErgocalciferolsDietary SupplementsVitamin D-Binding ProteinVitamin K 1SunlightVitamin B 6Vitamin E DeficiencyRicketsVitamin B 12 Deficiency25-Hydroxyvitamin D3 1-alpha-HydroxylaseHydroxycholecalciferolsVitamin K DeficiencyParathyroid Hormone25-Hydroxyvitamin D 2Vitamin B 6 DeficiencyVitamin D Response ElementAscorbic AcidCalcium, DietaryDihydroxycholecalciferols24,25-Dihydroxyvitamin D 3Amyloid beta-Protein PrecursorCholestanetriol 26-MonooxygenaseDietCalciumVitamin K 2OsteomalaciaPyridoxineSteroid HydroxylasesBone Density Conservation AgentsNutritional StatusEnzyme PrecursorsBone and BonesSeasonsBone DensityMolecular Sequence DataPhosphorusAvitaminosisRNA PrecursorsNutritional RequirementsVitamin B DeficiencyFood, FortifiedCell DifferentiationHypocalcemiaVitamin K 3AntioxidantsHyperparathyroidism, SecondaryAmino Acid SequenceFolic AcidNutrition PolicyBase SequenceRisk FactorsHypercalcemiaOsteoporosisVitamin K Deficiency BleedingNucleic Acid PrecursorsSkin PigmentationCells, Culturedbeta Carotenealpha-TocopherolRNA, MessengerDose-Response Relationship, DrugDouble-Blind MethodBiological MarkersOsteocalcinAmyloid Precursor Protein SecretasesIntestinal AbsorptionTime FactorsProtein Processing, Post-TranslationalPregnancyChromatography, High Pressure LiquidLiverCross-Sectional StudiesCell LineMineralsStem CellsCase-Control StudiesPhosphatesParathyroid GlandsSodium-Coupled Vitamin C TransportersAlkaline PhosphataseRetinoid X ReceptorsPrevalenceHomocysteineTocopherolsDehydrocholesterolsVitamin K Epoxide ReductasesHypophosphatemia, FamilialProspective Studies