The
Omega-3 Secret

Is Your Omega-3 Actually Working? Let’s find out!

Hi, I’m Zib

I’m the Longevity Researcher and I have over 19 years of experience coaching and guiding people toward better health.

To help me do this, I studied an MSc. in Molecular Medicine, BSc. in Human Bioscience, a Diploma in Clinical Nutrtion and am currently completing my PhD in Longevity, where I study the biological pathways that determine how we age.

Alongside my research studies I also help busy people like you boost their energy and feel stronger, slow the signs of aging and optimise their longevity.

Why Omega-3 Matters So Much

Omega-3 is not just another supplement.

EPA and DHA, the active forms of omega-3, become part of your cell membranes. They influence how your cells communicate, how flexible your membranes are, how inflammation is controlled, and how your brain, heart and immune system function over time.

Think of your cells like tiny communication hubs.

When your omega-3 levels are healthy, those cells can send and receive signals more efficiently. When your omega-3 levels are low, your cell membranes can become more rigid, less responsive and more prone to inflammatory signalling.

That matters because chronic low-grade inflammation is one of the key drivers of accelerated ageing, often called inflammaging.

And inflammaging is linked with many of the conditions people are trying to avoid as they get older, including heart disease, cognitive decline, joint problems, metabolic dysfunction and reduced resilience.

Is Your Omega-3 Actually Working?

You might already know omega-3 is good for your heart, brain, joints and long-term health.

Unfortunately, the truth is:

Most people are either not getting enough omega-3, or they are taking an oil that is too low-dose, poorly absorbed, or already oxidised before it reaches their cells.

So the real question is not:

“Should I take omega-3?”

It is:

“Is my omega-3 actually changing what is happening inside my body?”

That is where quality, testing and individualisation matter.

But first, let’s talk about the science and why something that should be simple, is often confusing and full of pitfalls… and no one is really at fault, it took me years to learn what I’ll share below.

The Three Types of Omega-3

Not all omega-3 is the same.

There are three main forms:

ALA

ALA means alpha-linolenic acid.

It is a plant-based omega-3.

Your body cannot make ALA, so it is classed as an essential fatty acid. You must get it from food.

ALA is found in foods like flaxseed, chia seeds, walnuts, soybean oil and canola oil.

Your body can convert some ALA into EPA and then DHA.

But this conversion is limited.

Conversion to DHA is usually very low, especially in men.

Supports: general cell function, energy metabolism, heart health indirectly, and EPA/DHA production.

Cellular roles: helps form cell membrane fats, provides energy through beta-oxidation, and acts as a precursor for EPA and DHA.

EPA

EPA means eicosapentaenoic acid.

It is a long-chain omega-3.

It is found mainly in oily fish and seafood.

EPA is especially linked with inflammation control.

Your body uses EPA to make signalling molecules called eicosanoids.

These help regulate inflammation, blood vessel tone, blood clotting and immune responses.

EPA can also be converted into specialised pro-resolving mediators, including E-series resolvins.

These help the body actively resolve inflammation rather than just suppress it.

Supports: heart, blood vessels, immune system, joints, brain signalling and inflammatory balance.

Cellular roles: cell signalling, inflammatory resolution, membrane structure, blood lipid regulation and immune cell communication.

DHA

DHA means docosahexaenoic acid.

It is another long-chain omega-3.

It is found mainly in oily fish, seafood and algae.

DHA is especially important for the brain, eyes and nervous system.

It is highly concentrated in the retina, brain and sperm.

DHA is a major structural fat in cell membranes.

It helps membranes stay fluid and flexible.

This matters for nerve signalling, synapse function and visual signalling in the retina.

DHA can also be used to make specialised pro-resolving mediators, including D-series resolvins, protectins and maresins. These help regulate inflammation and tissue repair.

Supports: brain, retina, nervous system, heart, sperm cells and immune balance.

Cellular roles: membrane fluidity, nerve transmission, synapse function, visual processing, inflammation resolution and cell signalling.

ALA is healthy, but your body has to convert it into EPA and DHA before it can deliver many of the benefits people associate with omega-3.

That conversion is very limited in humans, often less than 5 percent.

So eating chia seeds and walnuts is a good habit.

But if your goal is to meaningfully improve your Omega-3 Index, support your brain, protect your heart and reduce inflammatory signalling, you need a direct source of EPA and DHA.

How Much Omega-3 Is in Food?

Food is a brilliant place to start, but most people are surprised by how much oily fish they would need to eat consistently.

Approximate EPA and DHA per serving:

However, these numbers don’t even tell the entire story.

Whilst Cultivated Salmon tends to have higher Omega-3 content when compared to Wild Salmon, it’s important to know that Cultivated (Farmed) Salmon often has a higher amount of Omega-6 fatty acids, resulting in a higher Omega-6 to Omega-3 ratio compared to Wild Salmon. The nutritional value also often depends heavily on their feed and antibiotics they are forced to have (sometimes up to their entire body-weight equivalent throughout their short life).

As such, whilst the table above is a good indicator of where you can find high densities of Omega-3, there are many more important factors to consider.

Additionally, ALA conversion within the body depends on numerous genetic factors, so whilst we’ve been generous with an estimated average of 4%, for some people this may be significantly lower (such as in men).

Fatty fish are the richest natural source of EPA and DHA. Plant foods contain ALA, not preformed EPA and DHA.

So yes, you can improve omega-3 through food.

But in real life, most people are not eating salmon, sardines, mackerel or anchovies several times a week.

There are also hundreds or thousands of variants in where your fish came from, and how it matured, which all muddy’s the water (no pun intended) in terms of understanding how much Omega-3 you are actually consuming.

That is where a high-quality oil becomes practical.

Why Omega-3 Intake Is So With Modern Diets

Modern diets are working against us.

We eat less oily fish than previous generations. Many animals are now fed grain and omega-6 rich crops rather than grazing naturally. Chickens are rarely pasture-raised in the traditional sense. Processed foods are often built around seed oils and cheap omega-6 fats.

The result?

Many people are getting too much omega-6 and nowhere near enough omega-3.

The Omega 6:3 Ratio Imbalance

This matters because omega-6 and omega-3 compete inside the body.

Omega-6 is not “bad”. You need it. But when the balance is heavily skewed, your body is more likely to produce inflammatory signalling molecules.

A healthier omega-6 to omega-3 balance helps the body move away from chronic inflammatory signalling and towards resolution, repair and resilience.

Omega-3, Eicosanoids and Inflammation

This is where omega-3 becomes really powerful.

EPA and DHA help create signalling molecules involved in inflammation control, including eicosanoids, prostaglandins, resolvins and protectins.

In simple terms:

Omega-6 tends to produce more inflammatory messengers.

Omega-3 helps produce messengers that support resolution.

That means omega-3 does not simply “block” inflammation. It helps your body complete the inflammatory response properly.

That matters because inflammation is not always bad.

You need inflammation to heal, fight infection and recover from injury. The problem is when inflammation does not switch off.

That long-term, low-grade inflammation is one of the reasons people feel older than they should.

Omega-3 and Heart Health

Omega-3 is best known for cardiovascular support.

EPA and DHA have been studied for their effects on triglycerides, blood pressure, endothelial function, heart rhythm and cardiovascular events. Higher-dose omega-3 is also used pharmaceutically to reduce triglycerides.

But again, quality matters.

Taking a cheap, oxidised oil is not the same as increasing your EPA and DHA status with a fresh, well-formulated, bioavailable oil.

Omega-3 and Alzheimer’s Risk

Your brain is rich in DHA.

DHA helps support neuronal membranes, synaptic function, neurotransmission and resilience under stress.

That is why omega-3 status is so relevant when talking about cognitive ageing, Alzheimer’s disease and long-term brain health.

This does not mean omega-3 is a cure for Alzheimer’s. It is not.

But low omega-3 status is one of the modifiable factors that may contribute to poorer brain ageing, especially when combined with inflammation, poor metabolic health and oxidative stress.

Why 90% of fish oil is giving zero benefit

Omega-3 oils are fragile.

EPA and DHA contain multiple double bonds. Those double bonds are part of what makes them biologically useful, but they also make the oil vulnerable to oxygen, heat and light.

When omega-3 oxidises, it starts forming lipid peroxides and then secondary oxidation products like aldehydes and ketones.

Basically, the oil becomes damaged.

And once the oil is damaged, it is no longer behaving like the fresh EPA and DHA your cells need.

This can happen during manufacturing, transport, storage, or while the product sits on a shelf.

That is why standard off-the-shelf fish oils can be such a problem.

The Problem with Cheap Fish Oil

One of the biggest mistakes people make is assuming all fish oils are basically the same.

They are not.

Some analyses have found a large proportion of consumer fish oils exceed recommended oxidation limits, with one New Zealand analysis reporting very high levels of oxidation in tested products.

This does not mean every fish oil is bad.

It means you cannot assume quality.

A product can be cheap, convenient and well marketed, but cheaper oils often fail at oxidation protection, proper oil combines antioxidants and polyphenols (olive oil). What matters the most:

Freshness. Purity. Dose. Absorption. Cellular impact.

The Omega-3 Index

The Omega-3 Index measures EPA and DHA in your red blood cell membranes.

This is important because it shows what has actually been incorporated into your body.

Not what you swallowed.

Not what the label says.

What reached your cells.

The commonly referenced ranges are:

Below 4 percent

Higher risk zone

4 to 8 percent

Intermediate zone

Above 8 percent

Optimal zone

The goal is not just to “take omega-3”.

The goal is to reach a healthier Omega-3 Index.

That is why testing matters.

Longevity and the 8 Percent Target

This is where things get really interesting.

In the Framingham Offspring analysis, higher red blood cell omega-3 status was associated with longer life expectancy, with an estimated difference of around 4.7 years between lower and higher omega-3 status.

That does not mean omega-3 is magic.

It means omega-3 status appears to be a meaningful biomarker of long-term health.

And if your Omega-3 Index is low, improving it may be one of the simplest measurable changes you can make.

To put this into some additional context, smokers with an 8% omega-3 index had the same average lifespan as non smokers with 4%.

Why Dose Matters

Many people take omega-3 for years and never move their Omega-3 Index enough.

Why?

Because the dose is too low.

For general health, many adults may benefit from 1,000 to 2,000 mg of combined EPA and DHA per day. For people starting low, research shows that 2,000 mg per day is often used as a practical target to move towards an Omega-3 Index of 8 percent within 4 months.

Lower doses may still help, but they may not be enough to create meaningful cellular change.

This is why personal testing is so valuable.

Your dose should be based on your result, not guesswork.

What Omega-3 Oil Fits the Bigger Picture?

I choose a specific Omega-3 oil for myself and my family and we have been using it for years now.

I understand that the problem is not simply that people need “more omega-3”.

The problem is that people need omega-3 that is:

Fresh.
Protected from oxidation.
Properly dosed.
Bioavailable.
Balanced with the modern diet.
Measured through testing.

The brand I use approach is built around the idea of testing, supplementing and retesting, so people can see whether their oil is actually changing their Omega-3 Index.

That is a much stronger model than simply buying a random bottle of fish oil and hoping for the best.

Why Testing Comes First

Without testing, you are guessing.

You might already be low.

You might need more EPA and DHA than average.

You might be taking omega-3 but not absorbing it well.

You might be eating well but still struggling because your omega-6 intake is too high.

You might be using an oil that is doing very little.

The Omega-3 Index gives you a baseline.

Then you can personalise your intake and track whether your body is responding.

That is the future of supplementation:

Not “take this because everyone should”.

But:

Test. Personalise. Improve. Retest.

The proof is in the… testing.

The 2 images below show my Wife’s before & after tests (after switching to the tests that I recommend and use). Whilst we certainly do our best to maintain a healthy and balanced diet along with supplements, and have done for years, you can see she was still fairly out of balance. After just 3 months, the results speak for themselves.

BEFORE

AFTER

This is why testing is really important (if you can afford to do so). You may think your diet or current supplements are doing everything your body needs.

But do you really know without testing?