If you only track one number for cardiovascular risk, ApoB is a better one than LDL cholesterol, because it counts the actual number of artery-damaging particles in your blood. This is the metric ALIV anchors to, and it is also where omega-3 fatty acids earn their place. Among the crowded world of supplements, EPA and DHA are unusual in having large randomised trial evidence behind them.

This is especially relevant in India. South Asians tend to show a particular lipid pattern: higher triglycerides, lower HDL, and elevated ApoB, even at body weights that look unremarkable. At the same time, many regional diets are low in the marine sources that supply EPA and DHA. That combination, a higher-risk lipid profile plus lower dietary intake, is what makes omega-3 worth understanding rather than assuming.

This page covers what EPA and DHA do, what the trials show, the difference between the two, and the dosage ranges used in research. To find out whether it fits your numbers, book a consultation with ALIV's medical team.

What Are Omega-3 Fatty Acids?

Omega-3s are a family of essential fats, meaning your body cannot make them and must get them from diet. The two that matter most for cardiovascular and metabolic health are EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid), both found mainly in oily fish and in concentrated fish-oil and algae-based supplements.

A third omega-3, ALA, comes from plant sources like flaxseed and walnuts, but the body converts only a small fraction of ALA into EPA and DHA. This is the practical issue for many vegetarians in India: a diet can look rich in "omega-3" from seeds while still being low in the active EPA and DHA forms that the cardiovascular research is based on. Algae-derived EPA and DHA are the vegetarian-friendly way to close that gap.

How It Works

EPA and DHA lower triglycerides primarily by reducing how much triglyceride the liver produces and packages into circulating particles, and by helping clear those particles faster. The result is fewer triglyceride-rich lipoproteins in the blood.

The more important point for long-term risk is what happens to ApoB. Every atherogenic particle carries one ApoB molecule, so ApoB is a direct count of how many particles can lodge in an artery wall. In the largest trials of prescription omega-3, non-HDL cholesterol and ApoB were modestly reduced, indicating a drop in total atherogenic lipoproteins. EPA and DHA also have anti-inflammatory and plaque-stabilising effects that appear to extend beyond their effect on lipids alone, although those mechanisms are still being mapped.

Key Benefits (Research-Backed)

Triglyceride Lowering

Triglyceride lowering is the best-established effect. Pooled analyses of randomised trials show that combined EPA and DHA robustly reduce triglycerides, with DHA likely having a slightly greater triglyceride effect than EPA. At prescription strength, around 4 g per day, omega-3s lower triglycerides by 30 percent or more. This is strong, consistent randomised evidence.

Cardiovascular Events

In the REDUCE-IT randomised trial, high-dose purified EPA at 4 g per day reduced major adverse cardiovascular events by 25 percent in high-risk patients who were already on a statin and had elevated triglycerides.

The earlier GISSI-Prevenzione trial, using 1 g per day of combined EPA and DHA after a heart attack, found a roughly 10 percent reduction in the combined endpoint of death, non-fatal heart attack, and stroke.

These are clinical trial results, the strongest evidence tier, though it is worth noting that omega-3 outcome trials have not all been positive, and dose and formulation appear to matter.

Effect on ApoB and Particle Number

In the major prescription trials, ApoB and non-HDL cholesterol fell modestly. Notably, purified EPA does not raise LDL cholesterol, whereas mixed EPA and DHA at 4 g per day can modestly raise LDL cholesterol, although without a corresponding rise in ApoB or atherogenic particle number.

For a clinic that anchors on ApoB, this distinction is the useful one: the particle count is what is tracked, not LDL alone.

Dosage Guide

General guidelines based on published research. Your physician may recommend different dosages.

General Health and Dietary Insufficiency

Roughly 250 to 500 mg of combined EPA and DHA daily is a common maintenance range for people who eat little oily fish. This is about topping up intake, not treating a lipid abnormality.

Elevated Triglycerides

Major cardiology guidance describes 2 to 4 g per day of combined EPA and DHA for lowering high triglycerides, with the 4 g per day prescription-strength range being where the trial benefit is clearest. This level is a clinical intervention and should be supervised, not self-prescribed.

Form and Quality

Look for a supplement that states the actual EPA and DHA content per serving, not just total fish oil. Triglyceride-form and ethyl-ester-form omega-3s are both used; what matters most is hitting the EPA plus DHA dose.

Vegetarians should choose an algae-derived EPA and DHA product. Take with a meal to reduce reflux and improve absorption, and choose a product with freshness and purity testing to avoid oxidation and contaminants.

Contraindications and Interactions

Omega-3s are well tolerated. The most common complaints are a fishy aftertaste, reflux, or mild stomach upset, all reduced by taking the supplement with food or choosing an enteric-coated product.

At high doses, omega-3s have a mild blood-thinning effect, so anyone on anticoagulants or antiplatelet medication should use therapeutic doses only under medical supervision, and supplementation is usually paused before surgery on a physician's advice.

High-dose EPA has been associated with a small increase in atrial fibrillation in some trials, which is one more reason the 4 g per day range belongs in a supervised setting rather than as a self-directed choice. People with a fish or shellfish allergy should use algae-derived omega-3.

What to Look For When Buying

Read the EPA and DHA numbers, not the headline fish-oil figure, since a "1000 mg fish oil" capsule may contain only 300 mg of actual EPA and DHA.

Choose third-party-tested products for purity and freshness, prefer a stated triglyceride or re-esterified form where possible, and for vegetarian needs choose an algal oil.

This is education, not a specific product endorsement.

How ALIV Uses Omega-3

At ALIV, omega-3 status is assessed in the context of your lipid profile rather than recommended by default. It is most relevant within the Cardiovascular Protocol and the Metabolic Reset Protocol, and it connects directly to the way ALIV thinks about insulin resistance and the South Asian metabolic phenotype.

Whether you need it, and at what dose, depends on your triglycerides and ApoB, which is why it sits downstream of comprehensive bloodwork rather than being a blanket recommendation.

Omega-3 is not a cure for heart disease and not a replacement for prescribed lipid therapy. It is a well-evidenced tool that, used in the right person at the right dose, supports a healthier lipid and particle profile.

Conclusion

EPA and DHA are among the few supplements whose cardiovascular evidence holds up under randomised scrutiny, with the triglyceride and ApoB effects being the most useful part for everyday risk management.

For South Asians, who often combine a higher-risk lipid pattern with low dietary marine intake, the case for paying attention is stronger than average. The right move is to check your numbers first, then decide on form and dose with a physician.

ALIV's team in Pune and Mumbai can help you turn your lipid panel into a plan.

Book an assessment with ALIV.

Frequently Asked Questions

What is the difference between EPA and DHA?

Both lower triglycerides, with DHA likely slightly more effective at that, while DHA also tends to raise HDL more. Purified EPA does not raise LDL cholesterol, whereas mixed EPA and DHA can modestly raise LDL without raising particle number. The right choice depends on your goals and lipid profile.

Can vegetarians get enough omega-3 from flaxseed?

Not reliably. The body converts only a small fraction of the plant omega-3 ALA into the active EPA and DHA forms. Vegetarians who want EPA and DHA are best served by an algae-derived supplement.

How much omega-3 should I take for high triglycerides?

Major cardiology guidance describes 2 to 4 g per day of combined EPA and DHA for high triglycerides, with 4 g per day being where the strongest trial evidence sits. This is a supervised clinical dose, not a self-prescribed one.

Does omega-3 raise cholesterol?

Purified EPA does not raise LDL cholesterol. Mixed EPA and DHA at high doses can modestly raise LDL, but without raising ApoB or the number of atherogenic particles, which is the measure that matters most for risk.

Is fish oil safe at high doses?

Generally yes, but high doses thin the blood mildly and have been linked to a small increase in atrial fibrillation in some trials, so therapeutic doses should be supervised, especially if you take anticoagulants.

When should I take omega-3?

With a meal, to reduce reflux and aftertaste and to improve absorption. Consistency matters more than the specific time of day.

Disclaimer

This page is for educational purposes only and is not medical advice. Omega-3 supplementation is not intended to diagnose, treat, cure, or prevent any disease, and is not a substitute for prescribed lipid-lowering therapy. Results vary between individuals. Please consult a qualified healthcare professional before starting any supplement, particularly at therapeutic doses or if you take anticoagulants.