on September 27, 2026
Walk through the supplement aisle and you will probably see the words omega-3 or fish oil more than once. You may also hear about omega-3s when people talk about eating salmon, adding walnuts or chia seeds to meals, or supporting heart health. But what exactly are omega-3s?
Omega-3 fatty acids are a family of fats that play important roles throughout the body. They are part of the membranes surrounding our cells and are involved in functions related to the heart, blood vessels, lungs, immune system and endocrine system.[1] And while omega-3s are often discussed as though they are one nutrient, there are several different types worth understanding.
Three Omega-3s You May Hear About
The three omega-3 fatty acids most commonly discussed are ALA, EPA and DHA.
ALA (alpha-linolenic acid) is found primarily in plant foods and oils, including flaxseed, chia seeds, walnuts, soybean oil and canola oil. ALA is considered an essential fatty acid because the body cannot make it, which means we need to obtain it through food.[1]
EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid) are found primarily in fish and other seafood. Fatty fish such as salmon, sardines, herring and mackerel are particularly good sources.[1][2]
The body can convert some ALA into EPA and DHA, but only in relatively small amounts. That is one reason food sources of EPA and DHA—and, for some people, supplements—can play a role in omega-3 intake.[1]
Why Omega-3s Matter
Omega-3s are not simply a supplement ingredient. They are part of normal human nutrition.
DHA, for example, is found in particularly high concentrations in the brain and retina of the eye. Omega-3 fatty acids also contribute to cell structure and have roles in several body systems.[1]
Much of the research surrounding EPA and DHA has focused on cardiovascular health. Eating fish and seafood as part of a balanced dietary pattern is associated with heart-health benefits, and EPA and DHA from foods or supplements can lower triglyceride levels.[1] The American Heart Association recommends eating two servings of fish per week, particularly fatty fish.[2] That does not mean more is always better or that everyone needs an omega-3 supplement. As with most areas of nutrition, the bigger picture matters.
Start With Food
One of the simplest ways to think about omega-3s is to look at what is already on your plate. Salmon, sardines, mackerel, herring and trout can provide EPA and DHA. Walnuts, chia seeds and flaxseed provide ALA. Certain foods are also fortified with omega-3s.[1]
That gives people options. Someone who enjoys seafood might build omega-3 intake around fish. Someone eating more plant-based foods might regularly include walnuts, chia or flax. And people who do not routinely eat omega-3-rich foods may choose to discuss supplementation with a qualified healthcare professional.
The goal does not have to be creating another complicated nutrition rule. It can simply be becoming more aware of where these nutrients come from.
Food and Supplements Are Not the Same Thing
Fish oil is probably the best-known omega-3 supplement, but it is not the only form. Omega-3 supplements can also include krill oil, cod liver oil and algal oil, which provides a non-fish source of DHA and sometimes EPA.[1]
Supplements can be useful in certain circumstances, but they should not make us overlook the value of the foods that contain omega-3s. Fish, nuts and seeds provide other nutrients as well. A supplement is better viewed as a potential addition to a sound eating pattern—not a replacement for one. And because supplements can vary in the amounts and forms of omega-3s they contain, the words fish oil on the front of a bottle do not tell the whole story. Looking at the amounts of EPA and DHA on the Supplement Facts label can provide more useful information about what the product actually contains.[1]
The Novivra Perspective
At Novivra, we believe understanding what you put into your body matters just as much as following the latest wellness trend. Omega-3s are a good example. They are not a shortcut to health, and they do not replace the fundamentals. But they are nutrients with important roles in the body that can be part of a balanced approach to nutrition.
Start with the basics. Eat a variety of nourishing foods. Include healthy sources of fat. Choose omega-3-rich foods when they fit your preferences and lifestyle. And if you are considering supplementation, understand what you are taking and why.
Wellness does not have to be complicated. Sometimes it begins with simply knowing a little more about what is already on your plate.
🌱 One Better Habit This Week
Add one omega-3-rich food to your week.
Have salmon with dinner. Sprinkle chia or ground flaxseed into oatmeal or yogurt. Add walnuts to a snack or salad. Pick something that works naturally with the way you already eat. No complete diet overhaul. One food. One intentional choice. One better habit.
References
- National Institutes of Health, Office of Dietary Supplements. Omega-3 Fatty Acids: Fact Sheet for Consumers. ODSS
- American Heart Association. Fish and Omega-3 Fatty Acids. www.heart.org
Disclaimer
This article is for educational purposes only and is not intended to diagnose, treat, cure, or prevent any disease. Individual nutrition needs vary based on diet, food allergies, health conditions, medications and other factors. Omega-3 supplements may interact with certain medications or may not be appropriate for everyone. If you have a medical condition, take medications, are pregnant or breastfeeding, or are considering adding an omega-3 supplement to your routine, consider discussing it with a qualified healthcare professional.
—Novivra Global Wellness Team
