Breast milk concentrations of vitamin A vary widely; 150 lg/L–
1100 lg/L of preformed vitamin A, depending on maternal diet and
vitamin A status (Thompkinson & Kharb, 2007). Therefore, if an
infant is being breastfed, the mother’s diet is also an essential
factor for the infant’s nutritional status. If an infant receives human
milk with a high vitamin A concentration then vitamin A intakes
from pre-formed sources will be higher than those calculated in
this study (1100 lg/L = 660 lg/600 mL). At the other end of the
spectrum, if an infant is consuming human milk low in vitamin A
then deficiency issues might arise (150 lg/L = 90 lg/600 mL).