If you are trying to eat more Omega-3, ranked lists are useful because the best options are often not the most obvious ones. The foods below are ordered by Omega-3 content in g per 100 g, drawn from the foods in our database.
Remember: ranking by one nutrient is only one way to choose foods. Pairing matters too. Use the Omega-3 compound page to understand absorption, forms and interactions.
Flaxseed — the top-ranked source
| Total Fat | 37.3 g |
|---|---|
| Saturated Fat | 3.28 g |
| Sodium | 36.7 mg |
| Potassium | 793 mg |
| Total Carbohydrate | 34.4 g |
| Dietary Fiber | 23.1 g |
| Total Sugars | 1.6 g |
| Protein | 18 g |
Top 12 Omega-3 foods
- Flaxseed — 19.4 g per 100g. Thiamine, magnesium, lignans
- Mackerel — 2.30 g per 100g. Omega-3 (EPA & DHA), vitamin D, vitamin B12
- Salmon (Atlantic) — 1.44 g per 100g. Omega-3 EPA & DHA, vitamin D, vitamin B12
- Sardines — 0.98 g per 100g. Omega-3, calcium (with bones), vitamin D
- Rainbow Trout — 0.79 g per 100g. Omega-3 (EPA & DHA), vitamin B12, vitamin D
- Extra Virgin Olive Oil — 0.65 g per 100g. Vitamin E, vitamin K, oleocanthal polyphenols
- Mussels — 0.44 g per 100g. Vitamin B12, iron, selenium
- Tuna (canned, light) — 0.23 g per 100g. Selenium, vitamin B12, niacin
- Cod — 0.18 g per 100g. Selenium, vitamin B12, iodine
- Cheddar Cheese — 0.13 g per 100g. Calcium, protein, vitamin B12
- Scallops — 0.11 g per 100g. Vitamin B12, selenium, phosphorus
- Eggs — 0.09 g per 100g. Choline, vitamin B12, vitamin D
How to actually eat more Omega-3
A handful of additions usually move the needle more than a full diet reset. Omega-3 is best consumed from whole foods rather than supplements whenever possible. Try adding one new source each week, track how you feel, and build from there rather than forcing every meal to hit a target.
For broader context, see our Heart Health hub and the Omega-3 compound page.
Common questions
How much Omega-3 do I need a day? Needs differ by age, sex, life stage and health status. The figures here are not prescriptions; use them to compare foods, then apply your own context.
Are supplements better than food sources? Not automatically. Food provides co-factors such as fibre, fat and other micronutrients that help the body use Omega-3 effectively. Supplements are useful for filling confirmed gaps.
Scientific references & clinical evidence
This guide is built on peer-reviewed research — verify the primary sources below.
- “Vitamin D and marine omega-3 fatty acid supplementation and incident autoimmune disease: VITAL randomized controlled trial”. PubMed / source ↗
- “Omega-3 fatty acids for depression in adults”. PubMed / source ↗
- “Omega-3 supplementation and diabetes: a systematic review and meta-analysis”. PubMed / source ↗
- “Omega-3 fatty acids for the primary and secondary prevention of cardiovascular disease”. PubMed / source ↗
