Reviewed by Jessie, BSc Biomedical Science · Formulation Lead, Purest Kids
TL;DR — A child's DHA status at birth depends almost entirely on maternal intake during pregnancy, with the third trimester the key accumulation window. Trials link higher maternal DHA to improved visual acuity, cognitive scores, and language development. Breast milk DHA mirrors the mother's diet, making consistent prenatal and postnatal intake the single biggest lever.
The DHA story starts before the child does
By the time a child takes their first supplement, their DHA story has already begun. DHA accumulates in the foetal brain during the third trimester — the period of most rapid foetal brain growth — and the amount available depends almost entirely on what the mother consumed during pregnancy. A child born to a mother with low DHA status starts with a lower neural DHA reserve than a child born to a mother with adequate intake.
What the research shows about prenatal DHA
Multiple large studies have examined the relationship between maternal DHA intake during pregnancy and child developmental outcomes. Research has found associations between higher maternal DHA status and improved visual acuity, cognitive scores, and language development in infants and young children. The DINO trial, one of the largest randomised controlled trials in this area, found that infants born to mothers supplemented with DHA had significantly better mental development scores at 18 months than those born to unsupplemented mothers.
The first 1,000 days — from conception through age 2 — represents the most critical window for DHA accumulation. But critical does not mean exclusive. DHA continues to shape brain development well beyond infancy.
Breastfeeding and DHA
Breast milk contains DHA in amounts that reflect the mother's dietary intake. A mother with high oily fish consumption or who supplements with DHA will produce milk with higher DHA content. A mother with low omega-3 intake will produce milk with correspondingly lower DHA. Formula milk in most markets is now fortified with DHA, though the form and dose varies by brand.
What this means for children who are now 3 and older
The prenatal window has passed for children aged 3 and above — but the brain's requirement for DHA has not. Children who started with lower DHA reserves have more reason, not less, to ensure adequate intake going forward. And for parents who are pregnant now or planning to be, the prenatal case for DHA supplementation is well established.
Purest Kids Omega-3 is formulated for children aged 3 and above. For prenatal supplementation, speak with your obstetrician about appropriate options during pregnancy.
Omega-3 Mango Burstlets — for children aged 3+, 450mg DHA per serve →
References
- Colombo J, et al. "DHA supplementation: current implications in pregnancy and childhood." Pharmacological Research, 2013.
- Makrides M, et al. "Effect of DHA supplementation during pregnancy on maternal depression and neurodevelopment of young children: a randomised controlled trial." JAMA, 2010.
- Innis SM. "Dietary omega 3 fatty acids and the developing brain." Brain Research, 2008.