DHA can be appropriately supplemented for babies from about 6 months to 3 years of age. breast milk contains enough DNA to meet the baby’s needs before 6 months of age, and can be supplemented with dietary supplements after 6 months of age. DHA refers to docosahexaenoic acid, which is a polyunsaturated fatty acid essential to the human body and is very important for the development of nerves and retina. Before the baby is 6 months old, the DHA content in breast milk can meet the baby’s needs. If the mother consumes more deep-sea fish or takes some DHA supplement, it can also promote the secretion of DHA in breast milk. After 6 months of age, babies can add some deep-sea fish into their diet as supplemental food to promote the development of their brain and retina. Between the age of 6 months and 3 years, baby’s brain develops more rapidly, so it is best to supplement DHA between the age of 6 months and 3 years.