By Kate Bueckert
For the five-year study, 736 pregnant women were asked to take 2.4 grams of either fish oil or the placebo olive oil daily starting at 24 weeks of gestation.
The study was a double-blind test, meaning neither the researchers nor the women knew who was taking which supplement.
Researchers were able to follow up with 695 children for their first three years, and again when they were five years old.
The risk of asthma in the children whose mothers took fish oil was 16.9 per cent compared to 23.7 per cent for the children of mothers in the placebo group, the study found.
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