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Omega-3 and why we need it

You might’ve seen omega-3 on labels of peanut butter, chia seeds and many other products in health food isles... But what is omega-3? Why do we need it? And what are the best ways to include it in your diet?

Plant-based sources of omega-3

What is omega-3?

Omega-3 fatty acids come in different forms, with the most common being Alpha-linolenic acid (ALA), Eicosapentaenoic acid (EPA) and Docosahexaenoic acid (DHA). Of these, ALA is the only one that our bodies cannot produce. It must be consumed and can be found in many plant-based foods. EPA and DHA can be absorbed and used by our bodies without a conversion process, so it is often seen as more effective than ALA. EPA and DHA are found in fish oil and algae [1].

Essentially, to reap the full benefits of omega-3 our bodies need EPA and DHA. To get this, the most effective way is to consume it. However, in small amounts, our bodies can convert the ALA we consume into EPA and DHA [2].

Why do we need it?

Omega-3 fats are important for brain and heart health and can even improve life span.

These are a few of their benefits:

  • Improves blood flow within the body

  • Prevents blood clots

  • Lowers blood pressure

  • Lowers triglycerides (a fat that enters our blood after a meal)

  • Reduces inflammation

They do all this by affecting the function of the receptors in the cell membranes and regulating gene expression and protein function. In addition, omega-3 fats can assist with making hormones that regulate inflammation, blood clotting and the movement of artery walls [3,4,5].

Omega 3 - Flax Seeds

How do we get it?

Algae is a good example of a plant-based source of EPA & DHA omega-3. Many foods now contain fortified (added) omega-3, such as plant-based milk, bread, and spreads [6]. Additionally, ALA omega-3 can be obtained from a multitude of plant-based foods, some of which are listed below. In addition to their omega-3 content, these foods are also rich in other nutrients like fibre, unlike their animal-based counterparts.

Supplement your regular intake of EPA & DHA omega-3 with these easily available whole foods, all of which are high in ALA omega-3:


Serving size

ALA omega-3 per serving (gm)

% of recommended daily intake

Flaxseed/linseed oil

20 grams (1 tablespoon)


1090% [7]