Omega-3s: Why Almost Everyone Needs Them — And How to Choose the Right EPA/DHA Ratio

Omega-3 fatty acids play a role in nearly every system of the body: brain, mood, hormones, inflammation, pregnancy, and cardiovascular health. Yet most people today are severely deficient, especially those who don’t regularly eat fatty fish.

Below is everything you need to know about omega-3 deficiency, fat-soluble vitamin absorption, and how to choose the right EPA/DHA ratio for your health goals.

Why Omega-3s Are Essential

The two most biologically active omega-3 fats are:

• EPA (Eicosapentaenoic Acid)

• DHA (Docosahexaenoic Acid)

These fats are crucial for:

• Brain structure and function

• Hormone balance

• Mood regulation

• Cell membrane health

• Inflammation control

• Fetal development

• Vision

• Heart health

  
  

Citations:

1. Swanson, D., Block, R., & Mousa, S. A. (2012). Omega-3 Fatty Acids EPA and DHA: Health Benefits Throughout Life. Advances in Nutrition.

2. Ahmad, M. H., et al. (2021). The Role of Omega-3 Fatty Acids in Mental Health. Frontiers in Psychiatry.

3. Calder, P. C. (2017). Omega-3 Fatty Acids and Inflammation: Molecular Mechanisms and Clinical Applications. Nutrition.

   
   

Why Most People Are Deficient

Plant foods contain ALA, not EPA/DHA. Human conversion rates are extremely low:

• 5% or less converts to EPA

• 0.5–1% converts to DHA

This means relying on chia, flax, or walnuts is not enough.

Citations:

4. Brenna, J. T. (2002). Efficiency of Alpha-Linolenic Acid Conversion to Long-Chain n-3 Fatty Acids in Humans. Prostaglandins, Leukotrienes & Essential Fatty Acids.

5. Abdelmagid, S., Clarke, S., et al. (2023). Omega-3 Status and Health Outcomes. Clinical Nutrition.

Symptoms of Omega-3 Deficiency

Common signs include:

• Anxiety

• Depression

• Brain fog

• Dry skin

• Hormone disruption

• Joint pain

• High triglycerides

• Inflammation flare-ups

• Memory issues

• Stress intolerance

Citations:

6. Hallahan, B., et al. (2016). EPA for Depression. Journal of Clinical Psychiatry.

7. Superko, H. R., et al. (2020). Omega-3 Fatty Acids and Cardiovascular Disease. American Journal of Medicine.

8. Mischoulon, D., & Freeman, M. P. (2013). Omega-3 Fatty Acids in Psychiatry. Psychiatric Clinics of North America.

Fat-Soluble Vitamins Need Fat to Absorb

Vitamins A, D, E, and K require fat + bile flow to be absorbed and utilized.

Taking fat-soluble vitamins with omega-3s ensures maximum absorption because omega oils provide the fat needed for emulsification and transport.

Citations:

9. Hollander, D. (1981). Increased Absorption of Fat-Soluble Vitamins With Dietary Fat. American Journal of Clinical Nutrition.

10. Dawson-Hughes, B., et al. (2015). Vitamin D Absorption Is Enhanced by Dietary Fat. Journal of Bone and Mineral Research.

EPA vs DHA: The Ideal Ratio Depends on Your Health Goals

There is no “one perfect ratio.”Different ratios benefit different conditions.

WHEN YOU NEED MORE DHA

DHA supports brain, nerves, hormones, and pregnancy.

Best for:

• Pregnancy/postpartum

• ADHD

• Anxiety

• Memory issues

• Brain fog

• Cognitive decline

Citations:

11. Hibbeln, J. R., et al. (2018). DHA for Neurodevelopment. American Journal of Clinical Nutrition.

12. Yurko-Mauro, K., et al. (2010). DHA Improves Memory in Healthy Adults. Alzheimer's & Dementia.

WHEN YOU NEED MORE EPA

EPA reduces inflammation, pain, and stress hormone disruption.

Best for:

• PMS

• Menopause

• Pain/arthritis

• Depression

• Autoimmune conditions

• High CRP

• Heart disease markers

Citations:

13. Calder, P. C. (2013). Anti-Inflammatory Effects of EPA. International Journal of Clinical Practice.

14. Martins, J. (2009). EPA vs. DHA for Depression. Lipids in Health & Disease.

15. Woodman, R. J. (2019). EPA Reduces Triglycerides. Journal of the American Heart Association.

Balanced Ratios for General Wellness

If someone doesn't have a specific condition, a balanced EPA/DHA ratio supports:

• Heart function

• Skin

• Joints

• General mood

• Immune system

Citations:

16. Bernasconi, A. A., et al. (2020). Omega-3 Intake and Cardiovascular Health. Mayo Clinic Proceedings.

How Much Omega-3 You Need

• General health: 1,000–2,000 mg EPA + DHA

• Inflammation or mood: 2,000–3,000 mg

• High triglycerides: 2,000–4,000 mg EPA

• Pregnancy: 800–1,000 mg DHA + 200–300 mg EPA

Citations:

17. Skulas-Ray, A. C., et al. (2019). Omega-3 Dosage Recommendations. Circulation (AHA Scientific Statement).

18. Carlson, S. E. (2017). DHA in Pregnancy. Nutrients.

Safety Notes

Omega-3 supplements are extremely safe for most people.Caution only with:

• Blood thinners (Warfarin)

• Bleeding disorders

• Major surgery within 7 days

Citations:

19. Rizos, E. C., et al. (2012). Omega-3 Safety Profile. JAMA.

Omega-3 + Vitamin D: A Perfect Absorption Pair

Taking omega-3s with vitamin D3/K2 enhances absorption and utilization, especially for bone, hormone, and immune support.

Citations:

20. Martins, D., & Gaffney-Stomberg, E. (2020). Vitamin D Metabolism and Lipids. Nutrients.

21. von Hurst, P. R., et al. (2010). Vitamin D Improves Mood and Immunity With Omega-3 Interaction. British Journal of Nutrition.

    
    

Final Thoughts

Omega-3s are one of the few supplements almost everyone benefits from, especially those who don’t eat fish. Whether you choose higher EPA, higher DHA, or a balanced formula depends entirely on your goals.

Supporting your brain? Choose DHA.Reducing inflammation? Choose EPA.General wellness? Choose a balanced blend.