Written based on 6 research studies on PubMed, searched on 14 Nov 2026.
The claim
Posts online say that omega-3 fatty acids (fish oil) helps with Down syndrome.
Where research stands
We found 6 published papers on omega-3 fatty acids (fish oil) and Down syndrome. They were published between 2000 and 2021. None of them is a study in people. 2 were studies in animals, and 1 was only in cells in the lab.
- 0In people
- 2In animals
- 1Only in the lab
What the studies found
We have not summed up these studies in words yet. The most important papers are listed under Sources.
Verdict
Omega-3 fatty acids (fish oil) has been studied for Down syndrome in animals, not yet in people.
Unproven means: it was only tested in animals or cells, or there is too little or mixed data from people. How we rate claims
What this means for you: Results in animals or in cells often do not hold in people. Do not stop or change your medicines because of it. Ask your doctor before you start taking it.
Sources
- Fish oil improves gene targets of Down syndrome in C57BL and BALB/c mice.2015 · Nutr Res · In animals
- Docosahexaenoic acid-deficient phosphatidyl serine and high alpha-tocopherol in a fetal mouse brain over-expressing Cu/Zn-superoxide dismutase.2000 · Biochim Biophys Acta · In animals
- Epigallocatechin-3-Gallate Plus Omega-3 Restores the Mitochondrial Complex I and F0F1-ATP Synthase Activities in PBMCs of Young Children with Down Syndrome: A Pilot Study of Safety and Efficacy.2021 · Antioxidants (Basel) · In the lab
- Resolution of liver disease in transient abnormal myelopoiesis with fish oil emulsion.2017 · Pediatr Int · Other paper
- Reply: Green tea EGCG plus fish oil omega-3 dietary supplements rescue mitochondrial dysfunctions and are safe in a Down's syndrome child.2015 · Clin Nutr · Other paper
- Green tea EGCG plus fish oil omega-3 dietary supplements rescue mitochondrial dysfunctions and are safe in a Down's syndrome child.2015 · Clin Nutr · Other paper
