Folic AcidFolic Acid DeficiencySodiumNeural Tube DefectsTetrahydrofolatesHomocysteineDietary SupplementsFood, FortifiedVitamin B 12Vitamin B ComplexFolic Acid AntagonistsPreconception CareSodium ChannelsFolate Receptors, GPI-AnchoredHyperhomocysteinemiaAnemia, MacrocyticHematinicsVitamin B 6Pteroylpolyglutamic AcidsVitamin B 12 DeficiencyFolic Acid TransportersPregnancyBreadVitaminsPrenatal CareSodium, DietaryFlourSodium ChlorideFolate Receptor 1Methylenetetrahydrofolate Reductase (NADPH2)Double-Blind MethodPrenatal Nutritional Physiological PhenomenaFormyltetrahydrofolatesSpinal DysraphismAminopterinDietPterinsReduced Folate Carrier ProteinCerealsPyridoxineFIGLU TestMicronutrientsNutritional RequirementsSodium Channel BlockersNutrition PolicySodium IsotopesMethotrexateAnencephalyErythrocytesHomocystineMethylmalonic Acid4-Aminobenzoic AcidBiological AvailabilitySodium Dodecyl SulfateRiboflavinSodium BicarbonateGlutamatesNutritional StatusDose-Response Relationship, DrugMaternal Nutritional Physiological PhenomenaMethionineCleft PalateAnemia, MegaloblasticEpithelial Sodium ChannelsSodium NitritePregnancy Complications, HematologicIronSodium CompoundsPlacebosAdministration, OralIntestinal AbsorptionVitamin B DeficiencyAnemia, Iron-DeficiencySodium SalicylateOxidoreductases Acting on CH-NH Group DonorsAnemia, PerniciousIron, DietaryCromolyn Sodiumgamma-Glutamyl HydrolaseCleft LipSodium AzideInfant, NewbornPregnancy ComplicationsTime FactorsKB CellsIrelandLactobacillus caseiBetaineTetrahydrofolate DehydrogenaseTrimetrexateNepalMethylenetetrahydrofolate Dehydrogenase (NAD+)LeucovorinCongenital AbnormalitiesZincCarrier ProteinsKineticsMouth AbnormalitiesSodium HypochloritePotassium