Abstract
A recent trial showed that high-dose docosahexaenoic acid (high-DHA) supplementation of infants born <29 weeks’ gestation improves intelligence quotient (IQ) at five years’ corrected age. However, this finding has not been detected by other trials of DHA, which either did not measure IQ or included more mature infants. We analyzed the subgroup of 204 infants born <29 weeks’ from our earlier randomized trial of high-DHA (∼1 % total fatty acids) or standard-DHA (∼ 0.3 % total fatty acids). Participants were assessed for cognition at 18 months, and IQ and behavior at seven years’ corrected age. No group differences were detected for mean cognitive, IQ or behavior scores. At 18 months, 18.8 % of children in the high-DHA group had a cognitive score <85, compared with 31.1 % of children in the standard-DHA group, but at seven years there was no difference. Although an underpowered post-hoc subgroup analysis, this study provides limited support to recommendations that infants born <29 weeks’ gestation require supplemental DHA.
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