1. What is DHA? DHA is a polyunsaturated fatty acid, which is one of the most important components of the Omega-3 family. The content of DHA is very high in the human body, especially in the brain and retina. Therefore, supplementing enough DHA plays a very important role in the intellectual and visual development of infants and young children. 2. Why do you need to choose milk powder containing high DHA? Breast milk is the best food for babies aged 0-6 months.