Omega-3 Fatty Acids
Anti-inflammatory fats — EPA and DHA from fatty fish; ALA from walnuts, flax, chia — with strong evidence for heart, brain, and gut health.
Scientific & Editorial Standard: This information is synthesized from peer-reviewed databases (such as PubMed, NIH, NHS, and Mayo Clinic) and validated using multi-model cross-referencing by the Plateify Editorial Team. It is intended for educational purposes and is not medical advice. If you suspect food sensitivities, consult a healthcare provider.
Omega-3 fatty acids are a family of polyunsaturated fats the body can't produce in adequate amounts and must get from food. The three most relevant are EPA and DHA (mostly from marine sources — fatty fish, algae) and ALA (plant-based — walnuts, flax, chia, hemp, canola). EPA and DHA are the directly active forms; ALA is converted to EPA and DHA inefficiently (typically <10%), so it doesn't fully substitute.
Omega-3s help build cell membranes, lower triglycerides, reduce inflammation, support brain development, and may improve mood. Major heart-association guidelines recommend eating fatty fish twice weekly. For people who don't eat fish, algae-derived supplements provide EPA/DHA directly.
Sources and bioavailability
Highest EPA/DHA: salmon, sardines, mackerel, herring, anchovies, trout, oysters. Moderate: tuna (with mercury caveat for large species). Plant sources of ALA: walnuts, flaxseed, chia seeds, hemp seeds, canola oil. A 3-oz serving of salmon provides ~1.5g of EPA+DHA, which exceeds the typical 250–500mg/day baseline most health bodies suggest.
Supplementation
Fish-oil supplements are reasonable for people who don't eat fish, but quality varies — look for third-party testing for oxidation and contaminants. Higher-dose prescription omega-3 (EPA-only) is used for severe hypertriglyceridemia and is one of the few supplements with strong cardiovascular trial evidence at therapeutic doses. For depression, modest mood benefit has been shown with EPA-dominant supplementation, though not as a replacement for treatment.
Sources
- Omega-3 Fatty Acids — Fact Sheet for Health Professionals — NIH Office of Dietary Supplements
- Fish and Omega-3 Fatty Acids — American Heart Association
- Omega-3 fatty acids: An essential contribution — Harvard T.H. Chan School of Public Health
- Omega-3 Supplements: In Depth — NCCIH (NIH)
- Omega-3 Fatty Acids — Cleveland Clinic
Educational content: This page is for general informational purposes only. Individual responses to foods vary widely. If you suspect a food allergy or sensitivity, consult a licensed dietitian, allergist, or physician before making dietary changes. Full disclaimer
Some content on this site is AI-assisted. While we strive for accuracy, information may not reflect the latest research. Always verify health information with a professional.
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