Omega-3 fatty acids are essential fats your body cannot produce — they protect the heart, reduce inflammation, and support brain development, and Korea's local fish are among the richest natural sources.
Omega-3 fatty acids are a family of polyunsaturated fats that are essential for human health. The three main types are EPA and DHA (found in marine sources), and ALA (found in plant foods). EPA and DHA are the most biologically active forms and are directly linked to cardiovascular protection, anti-inflammatory effects, and brain health.
Cardiovascular benefits of omega-3 are well-established. Regular consumption lowers triglycerides, reduces blood pressure, decreases platelet aggregation, and modestly reduces the risk of fatal heart attacks. The American Heart Association recommends eating fish twice weekly.
Brain development: DHA is a major structural component of the brain and retina. It is essential during pregnancy and infancy for fetal brain development. Low DHA levels have been associated with increased risk of depression and cognitive decline in adults.
Korea is fortunate to have access to excellent local fish, and fish is a staple of the traditional diet. Mackerel (godeungeo), saury (kkongchi), anchovy (myeolchi), and Korean-style grilled or braised fish are all rich in omega-3 fatty acids. Sardines and salmon are also widely available in Korean markets and supermarkets.
For those who do not eat fish, plant-based ALA sources include perilla seeds and perilla oil (a traditional Korean ingredient), flaxseeds, chia seeds, and walnuts — though ALA must be converted to EPA/DHA in the body at a relatively low rate (~5–10%). Algae-based omega-3 supplements provide vegan EPA/DHA directly.
Fish oil capsules are widely available in Korean pharmacies and are safe for most people at standard doses (1–3g per day).
Key Points
- EPA and DHA (marine-sourced) are the most beneficial forms
- Korean staples — mackerel, saury, anchovy — are excellent natural omega-3 sources
- Recommended intake: at least 2 portions of fatty fish per week
- Reduces triglycerides, blood pressure, and heart disease risk
- Essential for brain development in fetuses and infants
- Perilla oil and seeds are a traditional Korean plant source of ALA omega-3
When to See a Doctor
- If you have high triglycerides — prescription-strength omega-3 doses may be recommended
- If you are pregnant and want advice on omega-3 intake for fetal brain development
- Before taking high-dose supplements if you are on anticoagulant medication (blood thinners)
For emergencies in Korea, call 119
Related Specialties
Find a Doctor in Korea
This content is published for educational purposes only. For accurate diagnosis and personalised treatment, consult a licensed KMA physician in Korea.
Frequently Asked Questions
Medical Disclaimer
This article is published by DoctorsInKorea.com for educational and informational purposes only. It does not replace a professional clinical evaluation by a licensed healthcare provider. For accurate medical diagnosis and personalised treatment paths, please book an appointment with a licensed KMA physician. For immediate life-threatening medical emergencies in Korea, please call 119.
Sources & References
Last reviewed: April 1, 2026