Walk into any pharmacy in India and look at the omega-3 shelf. Nearly every bottle will show two numbers: EPA and DHA. The assumption behind those two numbers is that more is better, that a supplement with both is more complete than one with just one.
That assumption is worth examining carefully, because the biology of your brain tells a different story.
Your brain does not accumulate EPA. It accumulates DHA. The two fatty acids serve different purposes in the body, and for the specific goal of supporting omega-3 brain health after 50, they are not interchangeable. One of them is doing the structural work inside every neuron you have. The other is largely absent from the tissue you are trying to support.
This is why Meru Activs Phospholipids Omega-3 is a DHA-only formula, and why that is a deliberate, science-grounded formulation decision rather than a limitation.
The three omega-3s, and what each one actually does
There are three omega-3 fatty acids worth understanding: ALA, EPA, and DHA.
Precursor
ALA
Found in flaxseeds, chia seeds, and walnuts. The body can theoretically convert ALA into EPA and DHA, but does so with only 2–10% efficiency even in younger adults, a figure that does not improve with age. Eating more flaxseed will not meaningfully raise your brain's DHA levels.
Signalling molecule
EPA
Primarily a signalling molecule. It plays an important role in cardiovascular health, inflammatory balance, and certain aspects of mood regulation. Found in fatty fish and standard fish oil supplements. However, EPA is not a significant structural component of the brain, research consistently shows the brain selectively accumulates DHA while maintaining low concentrations of EPA, even when EPA is abundantly available.
Structural omega-3
What your brain is built from
DHA
The omega-3 your brain is built from. Densely concentrated in neuronal membranes, synaptic terminals, grey matter of the cerebral cortex, the physical structures through which every thought, memory, and signal in your brain travels.
DHA (docosahexaenoic acid) is the omega-3 your brain is built from.
What DHA actually does inside the brain
DHA constitutes a significant portion of the grey matter in the cerebral cortex. It is densely concentrated in neuronal membranes and synaptic terminals, the physical structures through which every thought, memory, and signal in your brain travels.
This is not incidental. DHA is a structural component of the architecture of brain cell communication.
When neuronal membranes contain adequate DHA, they maintain their fluidity and flexibility. This membrane fluidity directly supports how efficiently receptors function, how readily neurotransmitters are released and received, and how quickly signals travel across synaptic connections.
Research by Li J et al. (2021) confirms DHA's central role in maintaining this neuronal membrane fluidity, the physical basis of efficient neurotransmission and cognitive performance.
— Li J et al. (2021), Nutrients
EPA in the brain
- Does not build neuronal membranes
- Low concentrations maintained even when supplemented
- Cardiovascular and inflammatory pathways
- Mood regulation support
DHA in the brain
- Primary structural component of neurons
- Selectively accumulated by brain tissue
- Maintains membrane fluidity and flexibility
- Underpins neurotransmission and cognitive performance
EPA does not perform this structural function. For the specific goal of supporting brain tissue, DHA is not one of two equally important omega-3s. It is the omega-3 that matters.
Why DHA depletes specifically after 50, and why EPA supplementation does not fix it
Two things happen simultaneously after the age of 50 that make the DHA gap more significant.
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1Existing DHA becomes more vulnerable to oxidative damage DHA is the most unsaturated fatty acid in the body, which is precisely what makes it so functionally effective in membranes, but also makes it more susceptible to oxidative degradation. Age-related increases in oxidative stress accelerate this breakdown, causing a gradual decline in membrane DHA that correlates with reduced fluidity and slower cognitive performance.
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2The body's ability to replenish DHA diminishes The conversion of ALA to DHA, already limited, does not improve with age. And the dietary sources of pre-formed DHA in the Indian diet are narrow: primarily fatty fish, consumed inconsistently. Vegetarian and largely plant-based diets provide no pre-formed DHA at all.
Supplementing with EPA does not address this gap. The body does not readily convert EPA back into DHA. The two fatty acids are metabolically distinct. If the objective is to support the DHA that neuronal membranes depend on, the supplement needs to deliver DHA , specifically and directly.
Why a DHA-only formula is more precise for brain health
Most omega-3 supplements are formulated around EPA because EPA is typically more abundant in fish oil and because EPA's cardiovascular and anti-inflammatory effects are well-established and easy to communicate.
For a general omega-3 supplement, EPA has value. But for a supplement designed specifically to support omega-3 brain health in adults over 50, leading with EPA is optimising for the wrong thing.
The brain selectively takes up DHA. The retina, also densely DHA-dependent, selectively takes up DHA. The specific neuronal and retinal health benefits that most 50+ adults are seeking from an omega-3 supplement are driven by DHA, not EPA. A DHA-focused formula is not a simpler formula. It is a more targeted one.
This is the logic behind Meru Activs Phospholipids Omega-3. The formula delivers 250 mg of DHA per capsule, sourced from marine microalgae, in phospholipid-bound form. There is no EPA because EPA is not what the brain needs from an omega-3 supplement. Every milligram is directed at the outcome the formulation is designed for.
Why algae and why phospholipid-bound?
Fish do not produce DHA. They accumulate it by consuming marine microalgae throughout their lives. Algae is the original, primary source of DHA in the marine food chain. Algae oil supplements go directly to the original source, the same microalgae that fish consume to accumulate DHA, delivering it cleaner and without the ocean contamination risk.
Meru Activs Phospholipids Omega-3 uses LECIVA®-M'Vegal DHA, a proprietary phospholipid-bound algal DHA technology by VAV Life Sciences, using DHA extracted from Schizochytrium sp. microalgae under controlled cultivation conditions. No ocean contaminants, no mercury, no heavy metals, and no fishy aftertaste.
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✓Phospholipid-bound, structurally compatible Most omega-3 supplements deliver DHA in triglyceride or ethyl ester form, formats that require multiple digestive steps before DHA can enter circulation, a process that becomes less efficient as gastrointestinal capacity changes with age. Phospholipid-bound DHA is structurally identical to the form in which DHA naturally exists in cell membranes.
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✓Enhanced bioavailability after 50 This structural compatibility aligns with the body's own lipid transport pathways, supporting efficient incorporation of DHA into neural, cardiac, and retinal tissues. After 50, when the body's ability to process fats has already shifted, that difference is not small.
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✓Crosses the blood-brain barrier Most importantly, phospholipid-bound DHA crosses the blood-brain barrier, delivering DHA directly to the brain tissue where it is needed, not just into general circulation. For a supplement built specifically around brain health, this is the most important thing it does.
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✓Vitamin E antioxidant stabiliser Each capsule includes Vitamin E as an antioxidant stabiliser, protecting the highly unsaturated DHA from oxidative degradation both within the supplement and within the membranes it supports.
Emerging research by Kitson et al. (2016) suggests that phospholipid-bound DHA may support brain DHA delivery pathways more effectively than standard triglyceride forms, making the delivery form as important as the dose.
Research by Yurko-Mauro et al. (2020) found that DHA supplementation was associated with improved cognitive performance in older adults. Arterburn et al. (2008) confirmed that algal DHA raises blood DHA levels as effectively as fish-derived DHA.
— Kitson AP et al. (2016) · Yurko-Mauro K et al. (2020) · Arterburn LM et al. (2008)
Frequently asked questions
Does the brain not benefit from EPA at all?
EPA plays an important role in the body — particularly in cardiovascular and inflammatory pathways, and in aspects of mood regulation. But the brain's structural requirements are met by DHA, not EPA. The brain actively accumulates DHA while maintaining low levels of EPA, even when EPA is supplemented. For brain-specific omega-3 support, DHA is the operative fatty acid.
Why not take both EPA and DHA together?
If your primary goal is broad cardiovascular and inflammatory support alongside brain health, a combined formula has its place. If your primary goal is targeted brain, retinal, and neural membrane support, a DHA-focused formula is more precisely aligned with what those tissues actually need. Meru Activs Omega-3 is formulated for that specific purpose.
How much DHA is needed daily for brain health?
General guidance for daily maintenance is 200–500 mg DHA. Meru Activs delivers 250 mg of phospholipid-bound algal DHA per capsule (1 capsule per day, after a meal).
Is algal DHA as effective as fish-derived DHA?
Yes. Research by Arterburn et al. (2008) confirmed that algal DHA raises blood DHA levels just as effectively as fish oil. Since algae is the original source of DHA in the marine food chain, the nutritional equivalence is well-established.
How long before DHA supplementation supports brain health?
DHA is incorporated into cell membranes gradually over weeks. Studies typically assess outcomes after 8–12 weeks of consistent daily supplementation. Consistency over time matters more than any single high dose.
The question of which omega-3 to take is not just a question of dose, it is a question of what you are supplementing for. If the goal is to support the DHA that neuronal membranes are built from, the supplement should deliver DHA. In phospholipid-bound form, from the source the body's lipid transport pathways recognise. Without the dilution of a fatty acid the brain does not accumulate.
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Disclaimer: This article is for educational and informational purposes only. It is not intended to diagnose, treat, cure, or prevent any disease or medical condition. Meru Activs Phospholipids Omega-3 is a nutraceutical supplement approved under FSSAI regulations. Consult a qualified healthcare professional before starting any new supplement, especially if you have a medical condition or are taking prescribed medication.
References
- Li J et al. (2021). DHA health benefits and bioavailability review. Nutrients. https://pmc.ncbi.nlm.nih.gov/articles/PMC8441440/
- Arterburn LM et al. (2008). Algal oil vs fish oil DHA bioavailability. The American Journal of Clinical Nutrition.
- Kitson AP et al. (2016). Phospholipid DHA and brain uptake. Journal of Nutrition. https://doi.org/10.3945/jn.115.225003
- Yurko-Mauro K et al. (2020). DHA and adult cognition. Alzheimer's & Dementia. https://doi.org/10.1002/alz.12123