Omega-3 fish oil is one of the most widely researched nutritional supplements, with EPA and DHA playing important roles in the heart, brain, and other body systems. Omega-3 fatty acids also form part of cell membranes, including those found in the skin.
As the body cannot make the essential omega-3 fatty acid ALA and converts only small amounts of it into EPA and DHA, omega-3s need to come from food, with supplements providing another source of EPA and DHA. This article explores the key health benefits of omega-3 fish oil, with a closer look at what omega-3 does for your skin and overall health
Key Takeaways:
- Omega-3 fish oil provides EPA and DHA, two long-chain omega-3 fatty acids commonly obtained from fatty fish such as salmon, mackerel, and sardines.
- The health benefits of omega-3 fish oil are best established for lowering triglyceride levels, while research into other cardiovascular outcomes remains mixed.
- DHA is an important component of the brain and retina, although evidence that omega-3 supplements improve cognitive function in generally healthy people remains inconclusive.
What Is Omega-3 Fish Oil?
Omega-3 fish oil is a source of two important long-chain fatty acids: EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid). Both occur naturally in fatty fish, including salmon, mackerel, and sardines, and are available in concentrated form through fish oil supplements
Health Benefits of Omega-3 Fish Oil
Heart Health
Among the most researched health benefits of omega-3 fish oil is its role in cardiovascular health. EPA and DHA can lower triglyceride levels, while research suggests omega-3 intake may also have a modest effect on blood pressure. However, evidence that over-the-counter fish oil supplements prevent cardiovascular events is mixed, so supplements should not replace prescribed treatment or a heart-healthy diet. Learn more about cardiovascular health and omega-3 supplements from HealthHub.
Brain and Cognitive Function
DHA is an important structural component of cell membranes in the brain. Researchers have therefore studied omega-3 intake in relation to memory and cognitive function, particularly as people age. Some observational research has found associations between higher long-chain omega-3 intake and lower cognitive decline, but clinical evidence for supplementation remains inconsistent.
Joint and Inflammation Support
EPA and DHA are involved in pathways that regulate the body’s inflammatory response, which has prompted research into omega-3 supplementation for inflammatory joint conditions. Some evidence suggests potential benefits for symptoms associated with rheumatoid arthritis, but results vary and omega-3 should not be considered a replacement for medical treatment.
Eye Health
DHA is found in particularly high concentrations in the retina, where it forms an important part of cell membranes. Omega-3 fatty acids continue to be studied for their role in eye health, although supplementation has not been shown to prevent every age-related eye condition.
Omega-3 Fish Oil Benefits for Skin
Skin Hydration and Moisture Barrier
Omega-3 fatty acids form part of cell membranes throughout the body and are involved in normal skin function. Research has explored their effects on hydration and skin barrier function, with some studies reporting improvements in moisture retention and transepidermal water loss. However, much of the recent evidence concerns topical omega-3 preparations, so more clinical research is needed to establish the effects of oral fish oil supplementation on skin hydration.
Anti-Inflammatory Support for Acne-Prone Skin
Because omega-3 fatty acids are involved in inflammatory pathways, researchers have investigated whether they could have a role in acne-prone skin. Some studies of oral supplementation have reported improvements, but the evidence remains limited and omega-3 should not be presented as an acne treatment. More research is needed to determine who may benefit and what intake is appropriate.
Eczema and Sensitive Skin
Omega-3 fatty acids have also been studied in relation to atopic dermatitis and other inflammatory skin conditions. Research suggests potential effects on inflammatory processes in the skin, but results are not strong enough to conclude that fish oil supplements prevent or treat eczema. People with persistent eczema should follow advice from their healthcare professional rather than relying on supplementation alone.
Skin Ageing and Elasticity
EPA and DHA participate in processes related to cell membranes and inflammation, which has led researchers to investigate their wider role in skin health and ageing. However, evidence that oral fish oil directly increases collagen, improves firmness, or visibly reduces fine lines is currently limited. A balanced diet, sun protection, and appropriate skincare remain important parts of maintaining healthy-looking skin.
If you are considering supplementation, Blackmores Omega Triple Concentrated Fish Oil is one of the omega-3 options available from PHarMed.
How Much Omega-3 Should You Take?
There is no single universally established daily EPA-and-DHA requirement for all healthy adults, while official recommendations also vary. Some guidance uses around 250–500 mg of combined EPA and DHA daily as a general dietary reference, while higher amounts may be used for particular conditions under medical supervision. Follow the supplement label and consult a pharmacist or doctor if you are unsure, particularly if you take blood-thinning medication or have a medical condition.
You can purchase vitamins online through PHarMed or speak to a PHarMed pharmacist for personalised supplement advice.
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