Omega-3 Benefits: What Happens When You Take It Every Day?

Fish oil has been a wellness staple for years. It was probably one of the first supplements many of us heard about for inflammation, joint health and heart health. But omega-3 has a much bigger role in the body than most people realise. 

Think about it. Your brain, eyes, heart, skin and even individual cells rely on fatty acids to function normally. And omega-3s, particularly EPA and DHA, are involved in several of these processes.

So, is taking an omega-3 supplement every day worth it? Can it support your skin, brain and heart? Are omega-3 benefits for women different from those for men? And how much EPA and DHA should you actually look for in a supplement?

Let's break it down, starting with what omega-3 really does.

What exactly is omega-3? 

Omega-3s are essential polyunsaturated fatty acids, meaning your body needs them but cannot produce enough of them independently. You need to obtain them through food or supplements. 

There are three main types: 

Here's something worth knowing: your body can convert ALA into EPA and DHA, but the conversion is limited. This means that eating walnuts and chia seeds is beneficial, but they are not direct nutritional equivalents of fish oil. [NIH]

This is why omega-3 fish oil has remained popular. It provides EPA and DHA directly, while algae oil offers a plant-based source of these long-chain omega-3s.

What happens when you take omega-3 every day? 

Omega-3s become part of your cell membranes and influence the production of signalling molecules involved in inflammation, circulation and other physiological processes. Regular intake helps maintain your body's supply of these essential fatty acids.

Here are the benefits that make omega-3 worth understanding beyond the usual fish oil conversation.

1. Helps regulate inflammation in the body 

Inflammation is a natural immune response, but prolonged or excessive inflammatory activity can affect different tissues and body functions.

EPA and DHA help regulate this response by influencing the production of inflammatory signalling molecules. They are also used to produce specialised mediators called resolvins and protectins, which help coordinate the resolution of inflammation.

Human research has found that EPA and DHA supplementation can reduce certain inflammatory markers, including C-reactive protein, particularly in people with elevated baseline inflammation. [NIH]

This is one reason omega-3 is frequently discussed for joint health and inflammatory balance. However, it should not be considered a treatment for inflammatory conditions.

2. Supports heart health and healthy triglyceride levels 

Omega-3 is important regardless of sex, but certain nutritional needs make it particularly relevant at different life stages.

Omega-3 benefits for women: DHA supports fetal brain and eye development during pregnancy. Adequate omega-3 intake is therefore particularly important during this life stage. Women who are pregnant or planning pregnancy should discuss DHA intake and supplement choices with their healthcare professional. [NIH]. 

Omega-3 benefits for men: DHA is present in sperm cells and contributes to normal cell membrane function. Omega-3s also support cardiovascular health. However, claims that supplements reliably increase testosterone or improve male fertility need stronger human evidence. [NIH]

How much omega-3 should you take daily? 

This is where reading the supplement label becomes important.

A capsule may contain 1,000 mg of fish oil, but that does not mean it provides 1,000 mg of omega-3. You need to check the actual EPA and DHA content.

There is no established RDA for EPA and DHA individually. However, around 250 to 500 mg of combined EPA and DHA daily is a commonly used general intake range for adults, particularly those who do not regularly eat oily fish. This is a practical reference, not an official RDA or a treatment dose. [NIH] and [EFSA].

For perspective, the American Heart Association recommends two servings of fish, particularly oily fish, per week. Higher doses, such as 4 g daily, may be prescribed for people with elevated triglycerides, but these should only be taken under medical supervision.

Fish oil or vegan omega-3: Which should you choose? 

Both can help increase your omega-3 intake, but their sources differ. 

If you follow a vegetarian or vegan diet, algae-based omega-3 is a useful alternative to fish oil. Just check whether the formulation provides both EPA and DHA or DHA alone.

When is the best time to take omega-3 capsules? 

The best time to take omega-3 is usually with a meal. Taking it alongside food, especially a meal containing some fat, can support absorption and may reduce digestive discomfort.

A few practical tips: 

Are omega-3 supplements safe to take every day? 

For most healthy adults, omega-3 supplements are generally well tolerated when taken at recommended doses. Some people may experience fishy aftertaste, heartburn, nausea or digestive discomfort.

Higher doses may increase the risk of atrial fibrillation in people with cardiovascular disease or elevated cardiovascular risk. If you take blood-thinning medication, have a heart rhythm condition or are preparing for surgery, consult your healthcare professional before supplementing. [NIH]

FAQs 

1. What are the main omega-3 benefits? 

Omega-3s support heart health, brain function, normal cell membranes and inflammatory regulation. EPA and DHA can also help lower elevated triglyceride levels.

2. What are the benefits of omega-3 capsules? 

Omega-3 capsules provide EPA and DHA in a convenient format, particularly for people who do not regularly consume oily fish. Check the EPA and DHA content rather than just the total fish oil quantity.

3. What are the omega-3 benefits for skin? 

Omega-3s support normal skin cell membrane function and influence inflammatory signalling. Research suggests they may contribute to skin barrier health, although evidence for specific cosmetic benefits is still developing.

4. Does omega-3 help with hair growth? 

Omega-3s support overall nutritional health, but there is insufficient strong human evidence to establish that supplementation directly stimulates hair growth or treats hair loss.

5. What are the omega-3 benefits for women? 

Omega-3s support cardiovascular and cellular health. DHA is particularly important during pregnancy because it contributes to fetal brain and eye development.

6. What are the omega-3 benefits for men? 

Omega-3s support heart health and normal cell function. DHA is also found in sperm cells, although evidence for improved testosterone or fertility from supplementation remains inconclusive.

7. Can I take omega-3 every day? 

Most healthy adults can take omega-3 daily within recommended serving limits. People taking medication or managing existing health conditions should check with their healthcare professional first.

8. Is omega-3 better than omega-3-6-9? 

Not necessarily, but a dedicated omega-3 supplement may be more useful if your goal is to increase EPA and DHA intake. Omega-6 and omega-9 are already present in many commonly consumed foods.

9. Is fish oil better than algae-based omega-3? 

Both can provide long-chain omega-3 fatty acids. Fish oil generally provides EPA and DHA, while algae oil provides DHA and, in some formulations, EPA too. Compare the actual amounts before choosing.

10. Are omega-3 gummies as effective as capsules? 

Omega-3 gummies can provide EPA and DHA, but their effectiveness depends on the amount per serving. Some contain considerably less omega-3 than capsules, so check the label before choosing a format. 

Key takeaway