Sports Nutritional Physiological PhenomenaMaternal Nutritional Physiological PhenomenaElder Nutritional Physiological PhenomenaVitamin DVitamin D DeficiencyDental Physiological PhenomenaDigestive System and Oral Physiological PhenomenaReproductive and Urinary Physiological PhenomenaCalcifediolMusculoskeletal and Neural Physiological PhenomenaCirculatory and Respiratory Physiological PhenomenaSunlightCholecalciferolVitaminsIntegumentary System Physiological PhenomenaAdolescent Nutritional Physiological Phenomena25-Hydroxyvitamin D 2Reproductive Physiological PhenomenaPhysiological PhenomenaVitamin ADietary SupplementsPrenatal Nutritional Physiological PhenomenaNutritional StatusReceptors, CalcitriolParathyroid HormoneUrinary Tract Physiological PhenomenaSeasonsErgocalciferolsVitamin EVitamin D-Binding ProteinCalcitriolChild Nutritional Physiological PhenomenaVitamin B 12Nutritional Physiological PhenomenaInfant Nutritional Physiological PhenomenaHydroxycholecalciferolsVitamin A DeficiencyRicketsCalcium, DietaryMusculoskeletal Physiological Phenomena25-Hydroxyvitamin D3 1-alpha-HydroxylaseBone Density24,25-Dihydroxyvitamin D 3Vitamin K 1DietCross-Sectional StudiesVirus Physiological PhenomenaBone Density Conservation AgentsDihydroxycholecalciferolsBone and BonesRisk FactorsFood, FortifiedAnimal Nutritional Physiological PhenomenaSkin PigmentationCalciumPrevalenceLinear ModelsDigestive System Physiological PhenomenaVitamin B 6Nutrition PolicyNutritional RequirementsVitamin E DeficiencyPhosphorusVitamin B 12 DeficiencyProspective StudiesPregnancyBiological MarkersAbsorptiometry, PhotonBlood Physiological PhenomenaNutrition SurveysBone DevelopmentCase-Control StudiesCohort StudiesVitamin K DeficiencyHIV Wasting SyndromeSteroid HydroxylasesGenu VarumVitamin B 6 DeficiencyOsteocalcinSunscreening AgentsVitamin D Response ElementAscorbic AcidUltraviolet RaysPelvic Floor DisordersInfant, NewbornAlkaline PhosphataseBody Mass IndexOsteoporosisEuropean Continental Ancestry GroupOcular Physiological PhenomenaGeorgiaAge FactorsOsteoporosis, PostmenopausalUlna FracturesNutrition AssessmentNervous System Physiological PhenomenaPostmenopauseAfrican AmericansLongitudinal StudiesPregnancy Trimester, Third