Milk is successfully produced by mothers regardless of their nutritional status. Nevertheless, the concentrations of some nutrients, specifically vitamins A, D, B1, B2, B3, B6, and B12, fatty acids, and iodine, in human milk depend on or are influenced by maternal diet. A healthy and varied diet during lactation ensures adequate maternal nutrition and optimal concentration of some nutrients in human milk. Exclusive breastfeeding meets the nutritional needs of infants for 6 months of life with the exception of vitamins D and K, which should be given to breastfed infants as supplements.
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