NIH-Funded Study Finds Higher Dose of DHA Lowers Preterm Birth Risk
Previous studies on the potential effects of DHA and other omega-3 fatty acids—nutrients found in fish and eggs and supplements like algal oil—have been inconclusive and have not identified a specific type or dose of omega-3 fatty acids.
Researchers enrolled nearly 1,100 women and compared the effects of administering 1,000 mg of DHA in one group and 200 mg in another group on the early preterm birth rate. Overall, fewer women in the high-dose group delivered early preterm compared to the standard-dose group. Among women who had high DHA levels at study entry, the rate of early preterm birth was low and did not differ by dose. The authors called for screening DHA levels in pregnancy so that women with low levels could consider taking a higher daily dose.