New research highlights that maternal DHA consumption during lactation continues to influence infant brain and eye development beyond birth, emphasising the importance of diet and supplements for nursing mothers.
Breastfeeding does not end the nutritional demands of pregnancy; in some respects, it extends them. Pink Stork says lactation can draw down a mother’s DHA stores by about 70 to 80 mg a day, while health guidance for nursing women commonly points to a daily intake of 200 to 300 mg of DHA, usually from fish or a supplement. The central issue is simple: the amount of DHA in breast milk largely reflects what the mother eats.
That matters because DHA, an omega-3 fatty acid, plays a role in infant brain and eye development. The DHA/EPA Omega-3 Institute says breast milk DHA levels vary with maternal diet, which means women who rarely eat fatty fish may produce milk with lower DHA unless they supplement. The CDC also notes that breastfeeding mothers need extra nutrients overall, including specific dietary attention for those who avoid seafood or follow vegetarian and vegan diets.
Research cited by Pink Stork suggests the effects can be measurable. A randomised trial found that DHA supplementation in breastfeeding mothers raised infant plasma DHA during the supplementation period and was linked with a better psychomotor development score at 30 months. A broader review in the National Library of Medicine’s PMC database concluded that maternal supplementation during pregnancy and lactation, within recommended safe intakes, may support infant brain and visual development, including attention and hand-eye coordination.
The practical takeaway is that the DHA window does not close at birth. DHA accumulation in the infant brain continues through the first two years of life, so breastfeeding mothers may still have reason to focus on intake months after delivery. Marine-oil supplements, including algal DHA, are commonly discussed as an option for women who do not eat fish regularly, but the CDC and other medical sources stress that any supplement should be chosen carefully and discussed with a healthcare provider, especially during lactation.
Disclaimer: This content is for informational purposes only and is not intended to be a substitute for professional medical judgment, advice, diagnosis, or treatment.
