Vitamins and Foods for Dry Eye Relief  health.clevelandclinic.org


Can Taking Vitamins Combat Infection?  American Society for Microbiology





































Vitamin A won’t prevent measles—vaccination will, says expert  Harvard T.H. Chan School of Public Health

























Vitamin D deficiencies: What to know  MD Anderson Cancer Center






















Science Update: Low vitamin D levels in early pregnancy linked to preterm birth risk  National Institute of Child Health and Human Development (.gov)