This period of high vulnerability is due to the fact that the infant depends solely and exclusively on breast milk for its growth. Exposure to pollutants can affect brain development, an impact that cannot be measured in the short-term but would be expressed in the medium- and long-term. The way in which antioxidants and related enzymes in breastmilk contribute to detoxifi cation is still unknown. This review suggests that a marine origin diet provides a signifi cant advantage because of the large number of micronutrients it contains, including fatty acids that are important for brain development in infants, potentially providing balance against the amount of pollutants it may contribute. Keywords: Antioxidants, breast milk, fi sh, marine diet, micronutrients.