Decades of research studies agree that the omega-3 fatty acids, eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), provide significant cellular and metabolic health benefits throughout life. ^1,2 Knowing these benefits, one of the first questions people ask is: how much EPA and DHA should I consume to meet my daily needs? While this may seem like a simple question, because several factors influence a person's omega-3 level, the answer can be quite complex.

To help inform this dosage question, various health organizations have published their own dosage recommendations based on available research and several other criteria. ^3,4 These organizations often recommend that adults consume a minimum of 500 mg of EPA and DHA each day, but recognize that higher amounts are often needed for individuals with metabolic risk factors and during specific periods of development, such as pregnancy and childhood . ⁵

The evidence that higher doses of EPA and DHA are safe, well-tolerated, and more effective at increasing blood omega-3 levels than modest doses leads us to believe that many people would benefit from consuming a higher dose than the recommended minimum of 500 mg. ⁶ 

The average human body is composed of approximately 37 trillion cells, and virtually all of them rely on EPA and DHA to maintain daily cellular activities. ^7,8 Although humans can synthesize EPA and DHA from alpha-linolenic acid (ALA), a fatty acid precursor found in flaxseed, walnuts, and canola oil, for example, because the conversion of ALA into EPA and DHA is very low, it is generally recommended that EPA and DHA be consumed directly through dietary sources, including cold-water fatty fish and/or fish oil supplements. ^9,10

After ingestion, EPA and DHA are deposited into cell membrane phospholipids, where they directly and indirectly affect cellular function by promoting cell membrane fluidity, flexibility, and permeability. ⁸ These characteristics are vital for numerous daily cellular functions, such as receiving, processing, and responding to information from nearby cells and messages from the surrounding environment. ^7,11

Importantly, since organs are composed of cells, consuming enough EPA and DHA allows them to function better, which is associated with better overall health. (For more information on the benefits of omega-3, see "Introduction to Omega-3 Fats").

In summary, fatty acid intake influences many aspects of health due to their diverse roles as structural lipids in every cell and as signaling precursors throughout the body. ¹²

Despite the body’s significant need for EPA and DHA, most clinical trials evaluating the effects of EPA+DHA have used smaller doses, between 250 mg and 1000 mg per day. However, accumulating evidence suggests that higher doses are safe and effective, and that doses below 2000 mg of EPA+DHA per day might not be enough to reap all the benefits of omega-3s. ^13-15 While getting omega-3s from cold-water fish is valuable, supplementing with a concentrated omega-3 product like Nordic Naturals® ^Ultimate Omega can offer a more consistent, pure, and efficient way to meet daily needs.

The fastest and most efficient way to determine your omega-3 requirements is through a blood test to determine your omega-3 index and, together with a specialist, determine the dose that best suits your needs. The omega-3 index measures the relative amount of EPA and DHA in red blood cells, expressed as a percentage of the total fatty acids present. If a person has an omega-3 index of 3.6%, it means that 3.6% of all fatty acids present in their red blood cell membranes is EPA+DHA. Notably, this result would also suggest that the person is not getting adequate amounts. In fact, an omega-3 index below 4% meets the criteria for insufficiency. Conversely, an index value above 8% is considered ideal for health.

But this raises a similar question: how much EPA and DHA does a person need to increase their omega-3 index? While this can only be definitively answered through testing, supplementation, and re-testing, observational and interventional studies find a dose-dependent relationship between omega-3 supplementation and the omega-3 index. In other words: the higher the dose of EPA+DHA supplement, the greater the increase in the omega-3 index.

Another frequently asked question about omega-3 dosage is the maximum amount of omega-3 a person can safely consume. Based on their assessment of available research, the US FDA and the European Food Safety Authority (EFSA) maintain that supplemental intake of up to 5000 mg per day is generally well-tolerated when used as intended, and does not increase the risk of adverse health complications.

Regarding the safety of omega-3 fish oil, a more important factor than dosage is the oxidative stability of the product. Oxidative rancidity occurs when the double bonds of a fatty acid molecule react with oxygen and break, forming a free radical and a chemical group that contributes to the fishy smell and burps often associated with less-fresh fish oil.

It is recommended that everyone, regardless of age or health status, get blood tests and consult with a doctor, who can provide personalized recommendations based on your dietary needs. However, in the absence of personalized tests, we offer general daily recommendations as a guide.

These recommendations are based on a careful review of:
1) the literature on omega-3 and human physiology.
2) many factors that prevent the synthesis and absorption of omega-3
3) clinical evidence showing that higher doses of omega-3 result in higher omega-3 levels, and
4) research indicating that daily doses of up to 5000 mg per day are safe when used as intended.

It is worth noting that these intake recommendations are considerably higher than those of other health organizations, which generally recommend that healthy adults consume a minimum of 500 mg of EPA+DHA per day.

It is important to recognize that these more moderate intake recommendations are suggested minimums, rather than recommendations for a wide range of health benefits, including healthy cellular structure and function.

Additionally, these moderate intake recommendations are based on research using smaller doses, whereas we now have sufficient evidence that omega-3 doses of up to 5000 mg are safe for daily consumption.

In summary, several factors influence a person’s omega-3 level and the amount needed for cellular health. While the only definitive way to ensure daily needs are met is through blood testing, a daily supplementation of 2000 to 3000 mg of EPA+DHA should provide a sufficient amount for most healthy adults and, more importantly, counteract the competitive effects of factors that hinder omega-3 metabolism. Nordic Naturals offers a wide range of high-quality omega-3 supplements, made from fish oil and algae, to meet individual dosage and format needs.

General notice and disclaimer: 
This information is for educational purposes only. Always consult with your healthcare professional if you have any medical condition or are taking any medication. The information provided herein is based on a review of current research; neither the presenter nor the sponsor assumes responsibility for the accuracy of the information or the consequences of its use or misuse.