Omega-3s and Plant-Based Diets: A Guide

Omega-3 fatty acids are essential nutrients vital for maintaining overall health and well-being. Traditionally, these healthy fats have been associated with fish and seafood, making plant-based eaters wonder how they can ensure they get an adequate supply. In this article, we will explore the world of plant-based omega-3s, their importance, and how individuals following a plant-based diet can incorporate them into their daily meals.

The importance of omega-3 fatty acids

Omega-3 fatty acids are a class of polyunsaturated fats known for their various health benefits, particularly for heart and brain health. The three main types of omega-3s are alpha-linolenic acid (ALA), eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA).

ALA is primarily found in plant-based sources, while EPA and DHA (the longer-chain forms of omega-3 fatty acids) are found in algae. These fatty acids play a crucial role in reducing inflammation, supporting cognitive function, and improving cardiovascular health. 

Plant-based sources of omega-3s


Flaxseeds are a rich source of ALA, and they can easily be incorporated into the diet by adding ground flaxseeds to smoothies, porridge, or baking recipes.

Chia seeds

Chia seeds are another excellent source of ALA and can be used in various recipes, such as chia pudding or as an egg substitute in vegan baking.

Hemp seeds

Hemp seeds are packed with ALA and can be sprinkled on salads, plant-based yoghurt, or included in homemade energy bars.


Walnuts contain ALA and make for a convenient, portable snack or a crunchy addition to salads or a topping for your porridge.

Algal oil supplements

Algal oil supplements are derived from microalgae and are a direct source of EPA and DHA, making them a suitable option for plant-based individuals seeking to increase their omega-3 intake.

Do I need to take a supplement?

Whether or not you should take an omega-3 supplement depends on various factors, including your diet, health goals, and any underlying health conditions. 

Here are some considerations to help you make an informed decision:

Dietary Sources

Omega-3 fatty acids, including EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid), are essential nutrients that can be obtained through dietary sources. As already mentioned, flaxseeds, chia seeds, and walnuts, are good natural sources of the shorter-chain ALA omega-3, which our bodies can convert to these longer-chain forms. 

When following a plant-based diet, however, it may be challenging for some individuals to obtain sufficient EPA and DHA from plant-based sources alone. In such cases, a supplement derived from algae (a primary source of vegan omega-3s) may be beneficial.

Health goals

Omega-3 supplements are often recommended for individuals looking to support heart health, reduce inflammation, or manage conditions like high triglycerides. They may also be beneficial during pregnancy and breastfeeding to support fetal brain development.

Blood levels

If you're interested in taking omega-3 supplements, you can discuss having your omega-3 blood levels measured with a healthcare provider. This can help determine whether supplementation is necessary and what dosage is appropriate, as this can vary based on individual needs and any relevant health conditions. 

Potential risks

Omega-3 supplements are generally considered safe for most people when taken at recommended doses. However, they can interact with certain medications and may cause side effects in some individuals, such as gastrointestinal issues or bleeding concerns. Always consult with a healthcare professional before starting any new supplement regimen, especially if you have underlying health conditions or take medications.

Ultimately, the decision to take an EPA/DHA supplement should be based on your specific dietary intake, health goals, and individual health status. Consulting with a healthcare provider or Accredited Practicing Dietitian is advisable to ensure that supplementation is appropriate and tailored to your needs. They can provide personalised guidance on whether and how much to supplement with omega-3s.

Balancing omega-3 and omega-6

In addition to increasing omega-3 intake, it's essential to maintain a balanced ratio of omega-3 to omega-6 fatty acids in the diet. While omega-3s have anti-inflammatory properties, excessive omega-6 consumption, often found in vegetable oils, can promote inflammation when out of balance. To maintain a healthy ratio, consider reducing the consumption of oils high in omega-6 (like corn, soybean, and sunflower oil) and increasing the intake of foods rich in omega-3s.

Adding more omega-3s into your day

Increasing your intake of omega-3 fatty acids from plant-based sources is not only possible but also beneficial for your health. Here are six tips to help you incorporate more plant-based omega-3s into your diet:

Plant-based diets can provide an ample supply of omega-3 fatty acids, primarily through sources rich in ALA, such as flaxseeds, chia seeds, hemp seeds, and walnuts. For those concerned about EPA and DHA, algal oil supplements offer a convenient and direct source. By being mindful of omega-3 sources and maintaining a balanced omega-3 to omega-6 ratio, individuals can enjoy the numerous health benefits of omega-3s while following a plant-based lifestyle. Ultimately, with the right knowledge and dietary choices, plant-based eaters can nourish both body and mind with these essential fatty acids.

The information provided in this article is intended for general informational purposes only and should not be considered a substitute for professional medical advice. Always consult with a qualified healthcare provider, such as an Accredited Practicing Dietitian, before making significant changes to your diet, especially if you have underlying medical conditions or specific dietary requirements. Nutritional needs can vary greatly from person to person, and individual health circumstances may require personalised dietary recommendations.