Fish oil supplementation during pregnancy to prevent asthma in children
Official title: Fish Oil in pREgnancY for Personalized Prevention of Early Childhood Asthma (FREYA)
Run by Copenhagen Studies on Asthma in Childhood · NCT06560255 · Data updated 2026-11-12
This study is testing if taking high-dose fish oil during pregnancy can help reduce the chances of children developing asthma and breathing problems.
Quick facts
| Phase | Phase 3 |
|---|---|
| Study type | Interventional |
| Ages | 18 Years to 45 Years |
| Sex | Women only |
| Enrollment | 2000 (estimated) |
| Sponsor | Copenhagen Studies on Asthma in Childhood Academic / other |
| Locations | 1 site (Gentofte Municipality) |
| Status | Recruiting |
| Started | December 20, 2024 |
| Main results expected | October 2026 |
| Study ends | March 2033 |
| Registry record updated | September 30, 2025 |
| Trial ID | NCT06560255 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are pregnant women in Denmark before 26 weeks of gestation with low EPA+DHA levels.
✕Probably not a fit
Patients with planned fish oil supplementation or those with certain health disorders like endocrine, heart, kidney, or autoimmune conditions may not benefit from this study.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This study aims to evaluate the effectiveness of high-dose fish oil supplementation during pregnancy in reducing the risk of early childhood asthma and related respiratory issues. Pregnant women with low levels of EPA and DHA will be randomly assigned to receive either fish oil or a placebo starting at 24 weeks of gestation until one week after delivery. The study will track the health outcomes of their children for three years, focusing on asthma, respiratory infections, and other related conditions. Maternal blood samples will also be analyzed for genetic and metabolic factors that may influence outcomes.
Why it matters
Potential benefit: If successful, this approach could significantly reduce the incidence of asthma and related respiratory conditions in children.
How similar studies have gone: Other studies have explored the role of omega-3 fatty acids in pregnancy, but this specific high-dose approach is relatively novel.
Who can join: the full rules
Show full inclusion / exclusion criteria
* Pregnant Danish women before week 26 with blood levels of EPA+DHA below 4.7% of total fatty acids * No planned use of fish oil supplementations * No endocrine-, heart-, kidney- or auto-immune disorders * No disorders requiring treatment with blood thinning medication
Where it's running
-
Copenhagen University Hospital of Copenhagen
Gentofte Municipality, Denmark Recruiting
Study contacts
- Principal investigator: Bo Chawes, PhD — Copenhagen Studies on Asthma in Childhood
- Study coordinator: Klaus Bønnelykke, PhD
- Email: kb@copsac.com
- Phone: +45 38677360
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
-
Vitamin D supplementation during pregnancy to prevent early childhood asthma
This study is testing if giving high-dose vitamin D to pregnant women can help prevent asthma and wheezing in their children by the time they reach three years old.
-
Modified measles vaccination schedule to prevent allergies and infections in children
This study is testing a new timing for the measles vaccine in kids to see if it can help prevent allergies and infections better than the usual schedule.
-
How exposure to heavy metals, nanoparticles, and emerging contaminants relates to allergic skin and systemic metal reactions
This project will test whether adults with allergic contact dermatitis or systemic metal allergies have different levels of heavy metals, nanoparticles, and related blood and urine markers compared with healthy adults.
-
Observing symptoms in children with first-onset bronchial asthma
This study looks at how asthma shows up in kids and teens aged 3 to 18, especially if they have unusual symptoms like a chronic cough, to see if a specific questionnaire can help spot these cases better.
-
Using vitamin C to improve lung function in children of pregnant smokers
This study is testing if giving pregnant women vitamin C can help improve lung function in their children who were exposed to smoking during pregnancy.
-
Study on mother-infant gut health in Malaysia and China
This study looks at how the types of bacteria in breast milk from mothers in Malaysia and China might affect their babies' health and development during the first year of life.
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.