CaffeineIronIntestinal AbsorptionAbsorptionIron IsotopesIron RadioisotopesIron, DietaryIron Chelating AgentsFerritinsIron OverloadFerrous CompoundsBiological AvailabilityPhytic AcidHepcidinsAnemia, Iron-DeficiencyHemochromatosisFerric CompoundsIron CompoundsAnemia, HypochromicDuodenumTransferrinFood, FortifiedHemoglobinsIron-Binding ProteinsCation Transport ProteinsAntimicrobial Cationic PeptidesAscorbic AcidHemosiderinEnterocytesFood AnalysisDietIron Metabolism DisordersReceptors, TransferrinIron Regulatory Protein 1Skin AbsorptionCaco-2 CellsBreadHemeZincDeferoxamineIron Regulatory Protein 2Spectrophotometry, AtomicPhlebotomyIron-Regulatory ProteinsBloodlettingIntestinesAdministration, OralX-Ray Absorption SpectroscopyFlourCoffeeGrape Seed Extract6-PhytaseCross-Over StudiesJejunumLiverSoybeansEdetic AcidMeatNutritional StatusIntestinal MucosaPhenylhydrazinesZinc IsotopesSpectrophotometryIntestine, SmallPolyphenolsCentral Nervous System StimulantsHematocritFecesBiological TransportErythropoiesisCalcium, DietarySpectrum AnalysisWhole-Body CountingHomeostasisCopperVegetable ProteinsInfant FoodDietary SupplementsNonheme Iron ProteinsTheobromineCitrus aurantiifoliaFood AdditivesCerealsMilkTeaSiderophoresDigitariaDysprosiumAnemiaTriticumHydrogen-Ion ConcentrationCeruloplasminIron-Dextran ComplexFoodbeta-ThalassemiaDietary ProteinsDose-Response Relationship, DrugRats, Sprague-DawleyZinc RadioisotopesTime Factors