Omega-3 oils are foundational building blocks that influence cell membrane structure, communication between cells, inflammation balance, brain function, and metabolic resilience. The difference between the Omega 3 and 6 oils are explained in a previous blog. There are numerous blogs relating to the function of Omega 3 oils which you can easily find by using the search tool.
Despite decades of research and growing awareness, omega-3 intake and status remain suboptimal across much of the world. Global biomarker data suggest that the vast majority of people do not reach the optimal Omega-3 Index range of 8% or higher.
Before thinking about supplementation, an important question is: How do you know if you’re getting enough?
Step 1: Evaluate your diet
The most direct way to support omega-3 status is through foods rich in the long-chain omega-3s EPA and DHA.
Top sources include wild [NOT farmed] salmon, sardines, mackerel, anchovies, herring, trout, and omega-3–enriched or pasture-raised eggs. A practical goal for most adults is fatty fish two to three times per week.
Plant foods such as flaxseeds, chia seeds, walnuts, and hemp provide ALA (alpha-linolenic acid). While beneficial, ALA must be converted into EPA and DHA, and this conversion is limited. On average, about 5–10% converts to EPA (can be up to 21% in premenopausal women) and only 0.5–5% converts to DHA (up to 9% in premenopausal women). The conversion depends on the availability of nutritional cofactors and the influence of hormones.
Research also suggests that this conversion may become less efficient during and after menopause, likely related to changes in oestrogen status. This means that many women in midlife may benefit from more direct sources of EPA and DHA.
It’s also worth noting that some people limit fish intake due to concerns about methylmercury and environmental contaminants, particularly in larger predatory fish such as swordfish, shark, king mackerel, and tilefish. Choosing smaller, short-lived fish like sardines and anchovies, and using purified, quality-tested marine supplements, can help support omega-3 intake while minimizing exposure.
When in doubt test
For a more personalized assessment, you can request a blood Omega-3 test through your GP or ask your Naturopath for a test kit. A few drops of blood can reveal your fatty acid levels within a period of about two weeks. The test can be undertaken in clinic or at home. This blood tests measure EPA and DHA levels in red blood cell membranes and reflects intake over the past several months.
From a functional nutrition perspective, this helps move omega-3 intake (and even supplementation) from guesswork to precision.
When diet isn’t enough
Because many people do not consistently consume fatty fish, and because needs may be higher during times of increased physiological demand such as stress, inflammation, pregnancy, and hormonal transition, targeted supplementation can be a practical way to help support healthy omega-3 status.
When choosing an omega-3 product, I look beyond dose alone and consider how closely the formula reflects the natural structure of whole fish as well as purity. This is why True Medicine recommends only quality practitioner-TGA approved supplements.
Omega-3s support many aspects of whole-body health, including cardiovascular function, brain and mood health, healthy inflammatory balance, joint and tissue resilience, and cell membrane structure and communication.
Given the global intake gap and the potential for reduced endogenous conversion, particularly during midlife and menopause, it’s worth taking a closer look at your own status.
Start with your diet. Consider testing your Omega-3 Index. And if needed, work with your healthcare practitioner to choose a supplement that reflects the complex, whole-food intelligence of marine nutrition.
The key is to work with a qualified health professional and not to self-prescribe especially if you are taking medications or have a medical condition. Your Naturopath can help determine what is appropriate for your individual health needs.
This blog explains why quality matters and how practitioner-only products are often far less expensive than over-the-counter brands.
The above data is courtesy of Dr. Deanna Minich