Breastfeeding provides perfect nutrition.
Breast milk is a perfect and complete food for an infant.
It is more easily digested than any substitute, it changes in composition to meet the nutritional needs of each growing infant, and it increases in quantity according to a baby's needs. Bloem, M. et al. The role of universal distribution of vitamin A capsules in combating vitamin A deficiency in Bangladesh. Breast milk is generally the main source, if not the only source, of vitamin A during a child's first 24 months of life. Cousers, S. et al.