Omega-3 Fatty Acids
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Evidence Summary
Omega-3 fatty acids, including eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), are polyunsaturated fats found in fish and plant sources. Research highlights their significant role in cardiovascular prevention and pregnancy outcomes, with ongoing investigation into their impact on mental health and cognition.
Evidence by Condition
Meta-analyses support the use of omega-3 fatty acids for the primary and secondary prevention of cardiovascular disease.
Higher intakes of omega-3 fatty acids during pregnancy are associated with longer gestation and improved perinatal outcomes.
Research is investigating the efficacy of omega-3 supplementation for treating major depressive disorder in both adults and adolescents.
Systematic reviews explore omega-3s as a potential non-medical alternative to improve brain function and slow dementia progression.
Effective Doses
Dose ranges are not explicitly specified in the provided research abstracts.
Key Findings
- Omega-3 fatty acids are effective for the primary and secondary prevention of cardiovascular disease (PMID: 30019766).
- Supplementation during pregnancy may lead to longer gestation and improved perinatal outcomes (PMID: 30480773).
- Evidence is being evaluated for the treatment of major depressive disorder in adults (PMID: 34817851) and adolescents (PMID: 39564892).
Limitations
There is a lack of conclusive evidence regarding the efficacy of omega-3s for treating dementia and specific dosing protocols for mood disorders.
Safety & Interactions
The provided research does not detail specific contraindications or drug interactions.
AI-generated summary from 494 peer-reviewed studies. Not medical advice. Always consult a healthcare provider.
Dietary Reference Intakes
Source: IOM/NAM Dietary Reference Intakes · Dietary Reference Intakes: Omega-3 Fatty Acids (EPA + DHA)
Drug-Supplement Interactions
⚠️ This information is for educational purposes only and does not constitute medical advice. Always consult your healthcare provider before combining supplements with medications.
Claims vs. Evidence
| Claim Type | % of Products | Evidence Required | Status |
|---|---|---|---|
| All Other | 99% | Tier D (Unclassified) | ✅ Supported |
| Structure/Function | 86% | Tier C (DSHEA Structure/Function (no pre-approval)) | ✅ Supported |
| Nutrient | 79% | Tier D (Unknown) | ✅ Supported |
| Qualified Health | 13% | Tier B (FDA Qualified Health Claim) | ✅ Supported |
| Approved Health | 2% | Tier A (FDA Approved Health Claim (21 CFR 101.9)) | ✅ Supported |
| No Claim | 0% | Tier D (No claim on label) | ✅ Supported |
🏛️ NIH ODS Factsheet
Research by Topic
⚠️ FDA Safety Data
Research Evidence (495)
BACKGROUND: Researchers have suggested that omega-3 polyunsaturated fatty acids from oily fish (long-chain omega-3 (LCn3), including eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA)), as well as from plants (alpha-linolenic acid (ALA)) bene...
BACKGROUND: Omega-3 polyunsaturated fatty acids from oily fish (long-chain omega-3 (LCn3)), including eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA)), as well as from plants (alpha-linolenic acid (ALA)) may benefit cardiovascular health. ...
BACKGROUND: Higher intakes of foods containing omega-3 long-chain polyunsaturated fatty acids (LCPUFA), such as fish, during pregnancy have been associated with longer gestations and improved perinatal outcomes. This is an update of a review that was...
BACKGROUND: Major depressive disorder (MDD) is highly debilitating, difficult to treat, has a high rate of recurrence, and negatively impacts the individual and society as a whole. One potential treatment for MDD is n-3 polyunsaturated fatty acids (n...
**Abdelhamid et al., 2018** | Cochrane Database Syst Rev | Meta Analysis Abdelhamid Asmaa S, Brown Tracey J, ... Hooper Lee. Omega-3 fatty acids for the primary and secondary prevention of cardiovascular disease. Cochrane Database Syst Rev. 2018-Nov-...
**Tunnicliffe et al., 2024** | Cochrane Database Syst Rev | Meta Analysis Tunnicliffe David J, Reid Sharon, ... Strippoli Giovanni Fm. Non-immunosuppressive treatment for IgA nephropathy. Cochrane Database Syst Rev. 2024-Feb-01;2(2):CD003962. doi:10....
BACKGROUND: Mental health disorders including major depressive disorder (MDD) are well recognized as major contributors to the global burden of disease among adolescents. The prevalence of adolescent depression is estimated to have increased by at le...
**Payne et al., 2012** | Cochrane Database Syst Rev | Meta Analysis Payne Cathy, Wiffen Philip J, Martin Suzanne. Interventions for fatigue and weight loss in adults with advanced progressive illness. Cochrane Database Syst Rev. 2012-Jan-18;1:CD00842...
**Saragiotto et al., 2016** | Cochrane Database Syst Rev | Meta Analysis Saragiotto Bruno T, Maher Christopher G, ... Macedo Luciana G. Motor control exercise for chronic non-specific low-back pain. Cochrane Database Syst Rev. 2016-Jan-08;2016(1):CD0...
**Abdelhamid et al., 2018** | Cochrane Database Syst Rev | Meta Analysis Abdelhamid Asmaa S, Martin Nicole, ... Hooper Lee. Polyunsaturated fatty acids for the primary and secondary prevention of cardiovascular disease. Cochrane Database Syst Rev. 20...
**Abdelhamid et al., 2018** | Cochrane Database Syst Rev | Meta Analysis Abdelhamid Asmaa S, Martin Nicole, ... Hooper Lee. Polyunsaturated fatty acids for the primary and secondary prevention of cardiovascular disease. Cochrane Database Syst Rev. 20...
**Hooper et al., 2012** | Cochrane Database Syst Rev | Meta Analysis Hooper Lee, Summerbell Carolyn D, ... Davey Smith George. Reduced or modified dietary fat for preventing cardiovascular disease. Cochrane Database Syst Rev. 2012-May-16;2012(5):CD00...
BACKGROUND: Omega-3 polyunsaturated fatty acids (omega-3 PUFAs) from fish and plant sources are commonly considered as a promising non-medical alternative to improve brain functions and slow down the progression of dementia. This assumption is mostly...
**Payne et al., 2017** | Cochrane Database Syst Rev | Meta Analysis Payne Cathy, Wiffen Philip J, Martin Suzanne. WITHDRAWN: Interventions for fatigue and weight loss in adults with advanced progressive illness. Cochrane Database Syst Rev. 2017-Apr-0...
**Hooper et al., 2011** | Cochrane Database Syst Rev | Meta Analysis Hooper Lee, Summerbell Carolyn D, ... Davey Smith George. Reduced or modified dietary fat for preventing cardiovascular disease. Cochrane Database Syst Rev. 2011-Jul-06(7):CD002137....
**Sydenham et al., 2012** | Cochrane Database Syst Rev | Meta Analysis Sydenham Emma, Dangour Alan D, Lim Wee-Shiong. Omega 3 fatty acid for the prevention of cognitive decline and dementia. Cochrane Database Syst Rev. 2012-Jun-13;2012(6):CD005379. d...
**Jasani et al., 2017** | Cochrane Database Syst Rev | Meta Analysis Jasani Bonny, Simmer Karen, ... Rao Shripada C. Long chain polyunsaturated fatty acid supplementation in infants born at term. Cochrane Database Syst Rev. 2017-Mar-10;3(3):CD000376....
BACKGROUND: Polyunsaturated fatty acid (PUFA) supplements, involving omega-3 and/or omega-6 components, have been proposed as a therapy for dry eye. Omega-3 PUFAs exist in both short- (alpha-linolenic acid [ALA]) and long-chain (eicosapentaenoic acid...
**Mohamed et al., 2021** | Cochrane Database Syst Rev | Meta Analysis Mohamed Imran, Kamarizan Mohamad Fathul Aizat, Da Silva Antonio. Medical adjuvant treatment to increase patency of arteriovenous fistulae and grafts. Cochrane Database Syst Rev. 20...
Previous data have linked omega-3 fatty acids with risk of dementia. We aimed to assess the longitudinal relationships of omega-3 polyunsaturated fatty acid intake as well as blood biomarkers with risk of Alzheimer's disease (AD), dementia, or cognit...
**Premkumar et al., 2026** | Cochrane Database Syst Rev | Meta Analysis Premkumar Muralidhar H, Huff Katie A, ... Pammi Mohan. Enteral lipid supplements for the prevention and treatment of parenteral nutrition-associated liver disease in infants. Coc...
**Zani et al., 2014** | Cochrane Database Syst Rev | Meta Analysis Zani Babalwa, Gathu Michael, ... Sinclair David. Dihydroartemisinin-piperaquine for treating uncomplicated Plasmodium falciparum malaria. Cochrane Database Syst Rev. 2014-Jan-20;2014(...
**Tanner et al., 2015** | Cochrane Database Syst Rev | Meta Analysis Tanner Nicola C, Da Silva Anthony. Medical adjuvant treatment to increase patency of arteriovenous fistulae and grafts. Cochrane Database Syst Rev. 2015-Jul-16;2015(7):CD002786. doi...
**Appleton et al., 2015** | Cochrane Database Syst Rev | Meta Analysis Appleton Katherine M, Sallis Hannah M, ... Churchill Rachel. Omega-3 fatty acids for depression in adults. Cochrane Database Syst Rev. 2015-Nov-05;2015(11):CD004692. doi:10.1002/1...
**Hallahan et al., 2016** | Br J Psychiatry | Meta Analysis Hallahan Brian, Ryan Timothy, ... Davis John M. Efficacy of omega-3 highly unsaturated fatty acids in the treatment of depression. Br J Psychiatry. 2016-Sep;209(3):192-201. doi:10.1192/bjp.b...
BACKGROUND: No large trials have been done to investigate the efficacy of an intervention combining a specific compound and several lifestyle interventions compared with placebo for the prevention of cognitive decline. We tested the effect of omega 3...
BACKGROUND & AIMS: The effect of maternal omega-3 fatty acids intake on the body composition of the offspring is unclear. The aim of this study was to conduct a systematic review and meta-analysis to confirm the effects of omega-3 fatty acids supplem...
**Wang et al., 2023** | Crit Rev Food Sci Nutr | Meta Analysis Wang Yandan, Liu Ruijie, ... Wang Xingguo. Does omega-3 PUFA-enriched oral nutritional intervention benefit cancer patients receiving chemo (radio) therapy? A systematic review and meta-a...
**Hartl et al., 2025** | Clin Nutr | Systematic Review Hartl Wolfgang H, Meybohm Patrick, ... von Loeffelholz Christian. Does parenteral Omega-3 fatty acid administration increase the risk of atrial fibrillation? An analysis of the current evidence. ...
**Hartweg et al., 2008** | Cochrane Database Syst Rev | Meta Analysis Hartweg J, Perera R, ... Farmer A. Omega-3 polyunsaturated fatty acids (PUFA) for type 2 diabetes mellitus. Cochrane Database Syst Rev. 2008-Jan-23;2008(1):CD003205. doi:10.1002/14...
**Marshall et al., 2011** | Cochrane Database Syst Rev | Meta Analysis Marshall Max, Rathbone John. Early intervention for psychosis. Cochrane Database Syst Rev. 2011-Jun-15(6):CD004718. doi:10.1002/14651858.CD004718.pub3 BACKGROUND: Proponents of ea...
**Dushianthan et al., 2019** | Cochrane Database Syst Rev | Meta Analysis Dushianthan Ahilanandan, Cusack Rebecca, ... Calder Philip C. Immunonutrition for acute respiratory distress syndrome (ARDS) in adults. Cochrane Database Syst Rev. 2019-Jan-24;...
**Kapoor et al., 2019** | Cochrane Database Syst Rev | Meta Analysis Kapoor Vishal, Malviya Manoj N, Soll Roger. Lipid emulsions for parenterally fed preterm infants. Cochrane Database Syst Rev. 2019-Jun-04;6(6):CD013163. doi:10.1002/14651858.CD01316...
**AlAmmar et al., 2021** | Nutr Neurosci | Systematic Review AlAmmar Welayah Ali, Albeesh Fatima Hassan, ... Khattab Rabie Yousif. Effect of omega-3 fatty acids and fish oil supplementation on multiple sclerosis: a systematic review. Nutr Neurosci. 2...
**Bosnjak et al., 2019** | Cochrane Database Syst Rev | Meta Analysis Bosnjak Kuharic Dina, Kekin Ivana, ... Puljak Livia. Interventions for prodromal stage of psychosis. Cochrane Database Syst Rev. 2019-Nov-01;2019(11). doi:10.1002/14651858.CD012236...
OBJECTIVES: To quantify the effect of eicosapentaenoic (EPA) and docosahexaenoic (DHA) acids on cardiovascular disease (CVD) prevention and the effect of dosage. METHODS: This study is designed as a random effects meta-analysis and meta-regression of...
BACKGROUND AND AIM: Effects of long-chain omega-3 (LCn3) and omega-6 fatty acids on prevention and treatment of inflammatory bowel diseases (IBD, including Crohn's Disease, CD and ulcerative colitis, UC), and inflammation are unclear. We systematical...
BACKGROUND: The effects of omega-3 fatty acid on cardiovascular health obtained inconsistent results. A systematic review and meta-analysis were therefore conducted to assess the effects of omega-3 fatty acid supplementation for primary and secondary...
**Mohammady et al., 2024** | Cochrane Database Syst Rev | Meta Analysis Mohammady Mina, Brown Tamara, ... Janani Leila. Omega-3 fatty acids for intermittent claudication. Cochrane Database Syst Rev. 2024-Oct-29;10(10):CD003833. doi:10.1002/14651858.C...
OBJECTIVES: Previous studies have assessed the effect of docosahexaenoic acid (DHA, 22:6n-3) and arachidonic acid (ARA, 20:4n-6)-supplemented infant formula on brain development and cognitive function in infants. However, the results have been incons...
BACKGROUND: Diabetic Retinopathy is a significant microvascular complication of diabetes mellitus characterized by progressive damage to the retinal vasculature. Current management strategies focus on modifying risk factors and treating established d...
**Gillies et al., 2012** | Cochrane Database Syst Rev | Meta Analysis Gillies Donna, Sinn John Kh, ... Ross Melissa J. Polyunsaturated fatty acids (PUFA) for attention deficit hyperactivity disorder (ADHD) in children and adolescents. Cochrane Databa...
**Moon et al., 2016** | Cochrane Database Syst Rev | Meta Analysis Moon Kwi, Rao Shripada C, ... Simmer Karen. Longchain polyunsaturated fatty acid supplementation in preterm infants. Cochrane Database Syst Rev. 2016-Dec-20;12(12):CD000375. doi:10.10...
**Zhong et al., 2021** | Eur J Nutr | Meta Analysis Zhong Yueyang, Wang Kai, ... Yao Ke. Dietary fatty acid intake, plasma fatty acid levels, and the risk of age-related macular degeneration (AMD): a dose-response meta-analysis of prospective cohort ...
**Ziaei et al., 2024** | Nutr Neurosci | Meta Analysis Ziaei Somayeh, Mohammadi Shooka, ... Heshmati Javad. A systematic review and meta-analysis of the omega-3 fatty acids effects on brain-derived neurotrophic factor (BDNF). Nutr Neurosci. 2024-Jul;...
BACKGROUND: Bipolar disorder is a complex psychiatric disorder and is amongst the top thirty causes of worldwide disability. Mood stabilisers are the primary pharmacological intervention, both in the treatment of acute episodes and in prophylaxis. Th...
**Lawrenson et al., 2015** | Cochrane Database Syst Rev | Meta Analysis Lawrenson John G, Evans Jennifer R. Omega 3 fatty acids for preventing or slowing the progression of age-related macular degeneration. Cochrane Database Syst Rev. 2015-Apr-09;201...
**Patch et al., 2021** | Curr Neurol Neurosci Rep | Meta Analysis Patch Craig S, Hill-Yardin Elisa L, ... Pearce Alan J. The More, the Better: High-Dose Omega-3 Fatty Acids Improve Behavioural and Molecular Outcomes in Preclinical Models in Mild Brai...
**Gillies et al., 2023** | Cochrane Database Syst Rev | Systematic Review Gillies Donna, Leach Matthew J, Perez Algorta Guillermo. Polyunsaturated fatty acids (PUFA) for attention deficit hyperactivity disorder (ADHD) in children and adolescents. Coc...
**O'Keefe et al., 2024** | Mayo Clin Proc | Meta Analysis O'Keefe Evan L, O'Keefe James H, ... Harris William S. Circulating Docosahexaenoic Acid and Risk of All-Cause and Cause-Specific Mortality. Mayo Clin Proc. 2024-Apr;99(4):534-541. doi:10.1016/...
Showing top 50 of 495 sources, sorted by quality score.
Details
Omega-3 Fatty Acids
Overview
Omega-3 Fatty Acids is a bioactive compound tracked in the biomedical knowledge base.
Also known as: fish oil, epa, dha, eicosapentaenoic acid, docosahexaenoic acid
Role in Health
Detailed overview pending — this entity has sources compiled across multiple verticals.
Related Verticals
See sources-index for all verified sources referencing Omega-3 Fatty Acids.
Safety Considerations
Safety data extraction pending.
Sources
See linked source pages for full provenance.
Related Supplements
Frequently Asked Questions
What are Omega-3 fatty acids and what are they used for?
Omega-3 fatty acids, such as EPA and DHA, are polyunsaturated fats found in both fish and plant sources. They are primarily used to support cardiovascular health and pregnancy outcomes.
Does Omega-3 help prevent heart disease?
Yes, there is strong evidence that omega-3 fatty acids are effective for both the primary and secondary prevention of cardiovascular disease.
Are Omega-3 supplements good for pregnancy?
There is moderate evidence that higher intakes of omega-3 fatty acids during pregnancy are associated with longer gestation and improved perinatal outcomes.
Can Omega-3 supplements help with depression or mood?
Currently, there is insufficient evidence to confirm if omega-3 supplementation is effective for treating major depressive disorder in adults or adolescents.
Do Omega-3s help with memory or dementia?
There is currently insufficient evidence to determine if omega-3s can improve brain function or slow the progression of dementia.
What is the recommended daily dose of Omega-3?
While an official dietary reference intake has not been established, the American Heart Association recommends a daily dose of 250-500 mg of EPA and DHA.
Are there any dangerous interactions with Omega-3 supplements?
There is a moderate interaction risk with the blood thinner warfarin, as high doses of omega-3 may reduce platelet aggregation. You should consult a healthcare provider if you are taking anticoagulant medications.
Answers generated from research evidence. Not medical advice.