The Power of Balance: Understanding EPA and DHA Omega-3s



Omega-3 fatty acids are a cornerstone of a healthy diet, and for good reason. Among them, two stand out for their powerful health benefits: eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). These are not just alphabet soup; they are essential fats that our bodies need but cannot produce efficiently on their own. Found primarily in fatty fish, their concentrated form in supplements is gaining attention from both doctors and health-conscious individuals.

How Do They Work?

Think of EPA and DHA as your body's cellular maintenance crew. They become part of our cell membranes, keeping them flexible and responsive. Their most important job, however, is to help manage inflammation. Our modern diets often contain an excess of omega-6 fats, which can promote inflammation. EPA and DHA work to balance this by producing compounds that resolve inflammation, helping to cool down overactive inflammatory responses throughout the body.

Key Benefits Supported by Science

The evidence for omega-3s is extensive, but two areas show particularly strong benefits.

First, cardiovascular health. EPA, in particular, has been shown to be a powerhouse for the heart. A landmark clinical trial, REDUCE-IT, found that a highly purified form of EPA significantly reduced the risk of major cardiovascular events in high-risk patients. Omega-3s also reliably help lower high triglyceride levels, a type of fat in the blood that can increase heart disease risk.

Second, brain health and mood. DHA is a primary structural component of the human brain. It is vital for brain development in infants and maintaining cognitive function throughout life. Meanwhile, EPA appears to play a more significant role in regulating mood. Some studies suggest that EPA, sometimes in combination with DHA, can have a positive effect on symptoms of depression.

Who Might Benefit?

A balanced EPA and DHA supplement may be beneficial for:

  • Individuals looking to support their cardiovascular health, especially those with high triglycerides.

  • People seeking to maintain cognitive function as they age.

  • Anyone wanting to support a healthy mood and inflammatory response.

  • Those who do not regularly consume fatty fish like salmon, mackerel, or sardines.

Important Safety Notes

Omega-3 supplements are generally very safe. The most common side effect is a fishy aftertaste, which can often be minimized by choosing high-quality, purified products. At higher doses, omega-3s can have a mild blood-thinning effect. It is important to speak with a healthcare provider before starting, especially if you take anticoagulant medications or have a scheduled surgery.

A Key Part of Your Health Plan

EPA and DHA are more than just general "good fats." They are specific, functional nutrients with distinct and important jobs in the body. Choosing a supplement with a balance of these two omega-3s can be a foundational part of a proactive health plan, working alongside a healthy diet and lifestyle to support your heart, brain, and overall well-being.



  • EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid) are essential omega-3 fatty acids found mainly in fatty fish. They support heart, brain, and overall cellular health. Because the body doesn’t produce them efficiently, many people supplement with EPA and DHA for optimal benefits.

  • EPA and DHA become part of cell membranes, supporting flexibility and communication between cells. More importantly, they help resolve inflammation by producing compounds that calm down the body’s inflammatory response, countering the effects of excess omega-6 fats in modern diets.

  • Research strongly supports their role in:

    • Cardiovascular health: EPA lowers triglycerides and reduces cardiovascular risk.

    • Brain health: DHA supports brain structure and cognitive function.

    • Mood support: EPA has shown benefits for mood balance and may reduce symptoms of depression.

  • You may benefit from EPA + DHA supplementation if you:

    • Have high triglyceride levels or cardiovascular risk

    • Want to maintain cognitive function with age

    • Are seeking mood support

    • Don’t regularly consume fatty fish like salmon or sardines

  • EPA is more involved in regulating inflammation and mood, while DHA plays a key structural role in the brain and eyes. Together, they offer complementary support for heart, brain, and immune health.

  • While fish is the best natural source, supplements can be an effective alternative—especially for people who don’t eat fish regularly. Choosing a high-quality, purified supplement helps ensure potency and minimizes contaminants.


Works Cited

  1. Omega-3 Fatty Acids & the Important Role They Play - Cleveland Clinic, accessed June 26, 2025, https://my.clevelandclinic.org/health/articles/17290-omega-3-fatty-acids

  2. OMEGA 3 - Health Benefits of Nutrition - MedPark Hospital, accessed June 26, 2025, https://www.medparkhospital.com/en-US/lifestyles/omega-3-health-benefits-of-nutrition

  3. What Are Omega-3 Fatty Acids? Explained in Simple Terms - Healthline, accessed June 26, 2025, https://www.healthline.com/nutrition/what-are-omega-3-fatty-acids

  4. DHA EPA Ratio | Calgee, accessed June 26, 2025, https://calgee.com/a/blog/dha-epa-ratio

  5. nutritionsource.hsph.harvard.edu, accessed June 26, 2025, https://nutritionsource.hsph.harvard.edu/what-should-you-eat/fats-and-cholesterol/types-of-fat/omega-3-fats/#:~:text=There%20are%20two%20main%20types,high%20amounts%20of%20EPA%2FDHA.

  6. EPA to DHA Ratios: Making Sense of Omega-3 Supplements - Momentous, accessed June 26, 2025, https://www.livemomentous.com/blogs/all/epa-dha-ratio

  7. Omega-3 fatty acids EPA and DHA: health benefits throughout life - PubMed, accessed June 26, 2025, https://pubmed.ncbi.nlm.nih.gov/22332096/

  8. Omega-3 Fatty Acids EPA and DHA: Health Benefits Throughout Life - PMC, accessed June 26, 2025, https://pmc.ncbi.nlm.nih.gov/articles/PMC3262608/

  9. Optimizing the EPA:DHA ratio - Casi.org, accessed June 26, 2025, https://www.casi.org/node/948

  10. EPA / DHA: A Review of Clinical Use and Efficacy | Nutritional Medicine Institute, accessed June 26, 2025, https://www.nmi.health/epa-dha-a-review-of-clinical-use-and-efficacy/

  11. Importance of EPA and DHA Blood Levels in Brain Structure and Function - PMC, accessed June 26, 2025, https://pmc.ncbi.nlm.nih.gov/articles/PMC8066148/

  12. EPA vs. DHA in Fish Oil and Omega-3 Fatty Acids | Everlywell, accessed June 26, 2025, https://www.everlywell.com/blog/vitamins-supplements/epa-vs-dha/

  13. Omega-3 Fatty Acids and Inflammatory Processes - PMC, accessed June 26, 2025, https://pmc.ncbi.nlm.nih.gov/articles/PMC3257651/

  14. Full article: Omega 3 fatty acids, inflammation and DNA methylation: an overview, accessed June 26, 2025, https://www.tandfonline.com/doi/full/10.1080/17584299.2017.1319454

  15. Effect of n-3 fatty acids on the expression of inflammatory genes in THP-1 macrophages, accessed June 26, 2025, https://pmc.ncbi.nlm.nih.gov/articles/PMC4820929/

  16. Omega-3 Fatty Acids for the Management of Osteoarthritis: A Narrative Review - PMC, accessed June 26, 2025, https://pmc.ncbi.nlm.nih.gov/articles/PMC9413343/

  17. Fish oil - Mayo Clinic, accessed June 26, 2025, https://www.mayoclinic.org/drugs-supplements-fish-oil/art-20364810

  18. How Much Omega-3 Should You Take per Day? - Healthline, accessed June 26, 2025, https://www.healthline.com/nutrition/how-much-omega-3

  19. Omega-3 Fatty Acids—Science, Efficacy, and Clinical Use in Cardiology | USC Journal, accessed June 26, 2025, https://www.uscjournal.com/articles/omega-3-fatty-acids-science-efficacy-and-clinical-use-cardiology?language_content_entity=en

  20. Consuming about 3 grams of omega-3 fatty acids a day may lower blood pressure, accessed June 26, 2025, https://www.heart.org/en/news/2022/06/01/consuming-about-3-grams-of-omega-3-fatty-acids-a-day-may-lower-blood-pressure

  21. The differential effects of eicosapentaenoic acid and docosahexaenoic acid on cardiovascular risk factors: an updated systematic review of randomized controlled trials - Frontiers, accessed June 26, 2025, https://www.frontiersin.org/journals/nutrition/articles/10.3389/fnut.2024.1423228/full

  22. Effect of omega-3 fatty acids on cardiovascular outcomes: A systematic review and meta-analysis - PMC, accessed June 26, 2025, https://pmc.ncbi.nlm.nih.gov/articles/PMC8413259/

  23. Omega-3 Fatty Acid Supplementation and Coronary Heart Disease Risks: A Meta-Analysis of Randomized Controlled Clinical Trials - PMC, accessed June 26, 2025, https://pmc.ncbi.nlm.nih.gov/articles/PMC8850984/

  24. Omega-3 fatty acid supplementation and cardiovascular disease: Thematic Review Series - PubMed Central, accessed June 26, 2025, https://pmc.ncbi.nlm.nih.gov/articles/PMC3494243/

  25. Omega-3 Supplementation and Cardiovascular Health: Mixed Results and Nuanced Benefits - MedPath Clinical Trial Search, accessed June 26, 2025, https://trial.medpath.com/news/97875ae5c34c589d/omega-3s-for-heart-health-exploring-potential-benefits-and-risks-nhlbi

  26. Recent Clinical Trials Shed New Light on the Cardiovascular Benefits of Omega-3 Fatty Acids, accessed June 26, 2025, https://pmc.ncbi.nlm.nih.gov/articles/PMC6822654/

  27. Meta-analysis Supports Cardiovascular Benefits of EPA - Medscape, accessed June 26, 2025, https://www.medscape.com/viewarticle/954402

  28. Do patients benefit from omega-3 fatty acids? - PubMed, accessed June 26, 2025, https://pubmed.ncbi.nlm.nih.gov/38252923/

  29. About the Vital Study, accessed June 26, 2025, https://www.vitalstudy.org/

  30. Effect of omega-3 fatty acids on cardiovascular outcomes: A systematic review and meta-analysis - PubMed, accessed June 26, 2025, https://pubmed.ncbi.nlm.nih.gov/34505026/

  31. Higher docosahexaenoic acid levels lower the protective impact of eicosapentaenoic acid on long-term major cardiovascular events - Frontiers, accessed June 26, 2025, https://www.frontiersin.org/journals/cardiovascular-medicine/articles/10.3389/fcvm.2023.1229130/full

  32. The Importance of Marine Omega-3s for Brain Development and the ..., accessed June 26, 2025, https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7468918/

  33. Omega-3 Fatty Acids: The Basics for Clinicians and Patients, accessed June 26, 2025, https://womensmentalhealth.org/posts/omega-3-fatty-acids-the-basics-for-clinicians-and-patients/

  34. Differential Therapeutic uses of EPA and DHA in ... - Point Institute «, accessed June 26, 2025, https://www.pointinstitute.org/wp-content/uploads/2012/10/Differential-uses-of-EPA-and-DHA-Journal-Version.pdf

  35. Cognitive efficacy of omega‑3 fatty acids in Alzheimer's disease: A systematic review and meta‑analysis - Spandidos Publications, accessed June 26, 2025, https://www.spandidos-publications.com/10.3892/br.2025.1940

  36. FISH OIL: Overview, Uses, Side Effects, Precautions, Interactions, Dosing and Reviews, accessed June 26, 2025, https://www.webmd.com/vitamins/ai/ingredientmono-993/fish-oil

  37. Cognitive efficacy of omega‑3 fatty acids in Alzheimer's disease: A systematic review and meta‑analysis - Spandidos Publications, accessed June 26, 2025, https://www.spandidos-publications.com/10.3892/br.2025.1940?text=fulltext

  38. Effects of ω-3 fatty acids on cognitive performance: a meta-analysis - PubMed, accessed June 26, 2025, https://pubmed.ncbi.nlm.nih.gov/22305186/

  39. Effects of omega-3 fatty acids on cognitive performance: A metaanalysis - ResearchGate, accessed June 26, 2025, https://www.researchgate.net/publication/52012647_Effects_of_omega-3_fatty_acids_on_cognitive_performance_A_metaanalysis

  40. Higher doses of omega-3 supplements may be needed for averting cognitive decline, accessed June 26, 2025, https://www.news-medical.net/news/20200719/Higher-doses-of-omega-3-supplements-may-be-needed-for-averting-cognitive-decline.aspx

  41. Ongoing Clinical Trial Compares Omega-3 Types for Dementia Risk Reduction, accessed June 26, 2025, https://www.pharmacytimes.com/view/ongoing-clinical-trial-compares-omega-3-types-for-dementia-risk-reduction

  42. EPA but Not DHA Appears To Be Responsible for the Efficacy of Omega-3 Long Chain Polyunsaturated Fatty Acid Supplementation in Depression: Evidence from a Meta-Analysis of Randomized Controlled Trials - ResearchGate, accessed June 26, 2025, https://www.researchgate.net/publication/44570464_EPA_but_Not_DHA_Appears_To_Be_Responsible_for_the_Efficacy_of_Omega-3_Long_Chain_Polyunsaturated_Fatty_Acid_Supplementation_in_Depression_Evidence_from_a_Meta-Analysis_of_Randomized_Controlled_Trials

  43. Omega-3 Supplementation and Its Effects on Osteoarthritis - MDPI, accessed June 26, 2025, https://www.mdpi.com/2072-6643/16/11/1650

  44. Omega-3 Fatty Acids for Your Health - Arthritis Foundation, accessed June 26, 2025, https://www.arthritis.org/health-wellness/treatment/complementary-therapies/supplements-and-vitamins/omega-3-fatty-acids-for-health

  45. Fish oil supplementation reduces osteoarthritis-specific pain in older adults with overweight/obesity | Rheumatology Advances in Practice | Oxford Academic, accessed June 26, 2025, https://academic.oup.com/rheumap/article/4/2/rkaa036/5875620

  46. Fish oil in knee osteoarthritis: a randomised clinical trial of low dose versus high dose, accessed June 26, 2025, https://pubmed.ncbi.nlm.nih.gov/26353789/

  47. Fish oil in knee osteoarthritis: a randomised clinical trial of low dose versus high dose, accessed June 26, 2025, https://ard.bmj.com/content/75/1/23.abstract

  48. 17 Science-Based Benefits of Omega-3 Fatty Acids - Healthline, accessed June 26, 2025, https://www.healthline.com/nutrition/17-health-benefits-of-omega-3

  49. Can Omega-3 Fatty Acids Help Treat Eye Diseases? - William A. Haseltine PhD, accessed June 26, 2025, https://williamhaseltine.com/can-omega-3-fatty-acids-help-treat-eye-diseases/

  50. The Effects of Dietary Supplementation With Omega-3 Fatty Acids on Symptoms of Dry Eye, accessed June 26, 2025, https://clinicaltrials.gov/study/NCT03141931?cond=FISH-EYE%20DISEASE&rank=1

  51. Omega Fatty Acid Supplementation Does Not Prevent Dry Eye, accessed June 26, 2025, https://www.reviewofoptometry.com/news/article/omega-fatty-acid-supplementation-does-not-prevent-dry-eye

  52. Efficacy of Marine ω-3 Fatty Acid Supplementation vs Placebo in Reducing Incidence of Dry Eye Disease in Healthy US Adults: A Randomized Clinical Trial - PubMed, accessed June 26, 2025, https://pubmed.ncbi.nlm.nih.gov/35679030/

  53. Omega-3 Fatty Acids - Consumer - NIH Office of Dietary Supplements, accessed June 26, 2025, https://ods.od.nih.gov/factsheets/Omega3FattyAcids-Consumer/

  54. Omega-3 Dosage: How Much EPA and DHA Should I Take? | Nordic Naturals, accessed June 26, 2025, https://www.nordic.com/healthy-science/omega-3-dosage-how-much-epa-and-dha-should-i-take/

  55. Fish and Omega-3 Fatty Acids | American Heart Association, accessed June 26, 2025, https://www.heart.org/en/healthy-living/healthy-eating/eat-smart/fats/fish-and-omega-3-fatty-acids

  56. Omega-3 Fatty Acids - Health Professional Fact Sheet - NIH Office of Dietary Supplements, accessed June 26, 2025, https://ods.od.nih.gov/factsheets/Omega3FattyAcids-HealthProfessional/

  57. Omega-3 Fatty Acids Uses, Benefits & Dosage - Drugs.com, accessed June 26, 2025, https://www.drugs.com/npp/omega-3-fatty-acids.html

  58. Lovaza (omega 3 fatty acids) dosing, indications, interactions, adverse effects, and more, accessed June 26, 2025, https://reference.medscape.com/drug/lovaza-omega-3-fatty-acids-342455

  59. Are you getting enough omega-3 fatty acids? - American Heart Association, accessed June 26, 2025, https://www.heart.org/en/news/2023/06/30/are-you-getting-enough-omega-3-fatty-acids

  60. Your GoodRx Guide for Omega-3 Dosages: How Much Is Too Much Daily?, accessed June 26, 2025, https://www.goodrx.com/omega-3-acid-ethyl-esters/omega-3-dosages

  61. How much omega-3 do people need per day? - Medical News Today, accessed June 26, 2025, https://www.medicalnewstoday.com/articles/324240

  62. Omega-3-carboxylic acids (oral route) - Mayo Clinic, accessed June 26, 2025, https://www.mayoclinic.org/drugs-supplements/omega-3-carboxylic-acids-oral-route/description/drg-20095342

  63. Omega-3 Fatty Acids: MedlinePlus Drug Information, accessed June 26, 2025, https://medlineplus.gov/druginfo/meds/a607065.html

  64. Fish Oil and warfarin Interactions Checker - Drugs.com, accessed June 26, 2025, https://www.drugs.com/drug-interactions/fish-oil-with-warfarin-1749-3873-2311-0.html?professional=1

  65. Drug Interactions between clopidogrel and Fish Oil - Drugs.com, accessed June 26, 2025, https://www.drugs.com/drug-interactions/clopidogrel-with-fish-oil-705-0-1749-3873.html?professional=1

  66. Drug Interaction Report: Omega-3, warfarin - Drugs.com, accessed June 26, 2025, https://www.drugs.com/interactions-check.php?drug_list=1749-15695,2311-0&professional=1

  67. Your questions about complementary medicines answered: fish oil - RACGP, accessed June 26, 2025, https://www.racgp.org.au/afp/2015/july/your-questions-about-complementary-medicines-answe

  68. The Use of Fish Oil with Warfarin Does Not Significantly Affect either the International Normalised Ratio or Incidence of Adverse Events in Patients with Atrial Fibrillation and Deep Vein Thrombosis: A Retrospective Study - PMC, accessed June 26, 2025, https://pmc.ncbi.nlm.nih.gov/articles/PMC5037562/

  69. (PDF) The Use of Fish Oil with Warfarin Does Not Significantly Affect either the International Normalised Ratio or Incidence of Adverse Events in Patients with Atrial Fibrillation and Deep Vein Thrombosis: A Retrospective Study - ResearchGate, accessed June 26, 2025, https://www.researchgate.net/publication/308393445_The_Use_of_Fish_Oil_with_Warfarin_Does_Not_Significantly_Affect_either_the_International_Normalised_Ratio_or_Incidence_of_Adverse_Events_in_Patients_with_Atrial_Fibrillation_and_Deep_Vein_Thrombosis_A

  70. Drug Interaction Report: omega-3 polyunsaturated fatty acids, Xarelto - Drugs.com, accessed June 26, 2025, https://www.drugs.com/interactions-check.php?drug_list=1749-0,3332-15382&professional=1

  71. Do Omega 3's Increase Your Risk of Bleeding With Warfarin? - AlgaeCal, accessed June 26, 2025, https://blog.algaecal.com/do-omega-3s-increase-risk-of-bleeding/

  72. Fish oil interaction with warfarin - PubMed, accessed June 26, 2025, https://pubmed.ncbi.nlm.nih.gov/14742793/

  73. Subdural hematoma after a fall in an elderly patient taking high-dose omega-3 fatty acids with warfarin and aspirin: case report and review of the literature - PubMed, accessed June 26, 2025, https://pubmed.ncbi.nlm.nih.gov/17192169/

  74. www.drugs.com, accessed June 26, 2025, https://www.drugs.com/drug-interactions/eliquis-with-omega-3-3438-16026-1749-15695.html?professional=1#:~:text=Interactions%20between%20your%20drugs&text=MONITOR%3A%20Omega%2D3%20fatty%20acids,%2Dinflammatory%20drugs%20(NSAIDs).

  75. Omega-3 fatty acids: Uses, Interactions, Mechanism of Action | DrugBank Online, accessed June 26, 2025, https://go.drugbank.com/drugs/DB11133

  76. Cholesterol and Triglycerides: Eating Fish and Fish Oil - Topic Overview, accessed June 26, 2025, https://www.myactivehealth.com/hwcontent/content/special/hw114960.html

  77. What are the contraindications for omega-3 fatty acid (fish oil) supplementation?, accessed June 26, 2025, https://www.droracle.ai/articles/76711/contraindication-for-fish-oil

  78. What supplements should be avoided while taking Plavix (clopidogrel)?, accessed June 26, 2025, https://www.droracle.ai/articles/46985/any-supplements-to-avoid-if-on-plavix


Content Disclaimer

This information was generated and formatted using AI technology to summarize and present current scientific research on the specified supplement. While every effort has been made to ensure accuracy, clarity, and relevance, the information provided should not be considered a substitute for professional medical advice. All health claims are supported by citations from peer-reviewed studies and credible sources, which have been included for transparency and verification. Always consult a qualified healthcare provider before making decisions related to supplement use or health interventions.


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