Fish oil for pregnant moms may shield babies from asthma

NCT ID NCT00798226

Ongoing Prevention Sponsor: Copenhagen Studies on Asthma in Childhood Source: ClinicalTrials.gov ↗

First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tests whether giving pregnant women fish oil supplements can prevent asthma, eczema, and allergies in their children. 800 mothers took fish oil or a placebo from week 24 of pregnancy until one week after birth. The children are then followed for several years to see if they develop these conditions.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: fish oil (n-3 fatty acids)
What this could lead to: If it works, this could point toward a simple dietary supplement during pregnancy to lower the child's risk of asthma and allergies.
What could go wrong: This is an early-phase trial, so results are not yet proven. The supplement may not prevent these conditions, and individual results may vary.

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Conditions

The condition(s) this trial relates to.

Eczema allergic disease prevention target asthma prevention target atopic eczema prevention target

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

ALLERGY ASTHMA ECZEMA

Contacts and locations

Locations

Copenhagen University Hospital of Copenhagen

Gentofte Municipality, Gentofte, 2820, Denmark
Næstved Hospital, Pediatric Department

Næstved, Næstved, 4700, Denmark

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