ABSTRACT

Overthecourseofthepasthalfcenturyandatthesametimeindifferentcountries therehasbeennogeneralconsensusastotheamountofanynutrientthatshould beconsumedregularlyinordertomaintainhealthandattainwhatmaybeconsideredtobenormalnutritionalstatus.VitaminAisnoexceptionasthelatest figuresavailablefromvariouspublicationsshow(Table1).