FAQ Frequently ASked Questions For Fish Oils & Omega Fatty Acids
What is the difference between EPA and DHA?
EPA and DHA are both long-chain omega-3 fatty acids, but they have different roles in the body. DHA is particularly abundant in the brain and retina, while EPA is involved in several biological processes, including those related to cardiovascular and inflammatory health.
What are fish oil supplements used for?
Fish oil supplements are commonly used to increase dietary intake of EPA and DHA. Omega-3s are associated with cardiovascular, brain, eye, and overall nutritional health.
How much EPA and DHA should I look for?
The amount depends on your individual nutritional needs and the reason you are taking an omega-3 supplement. Instead of focusing only on the total amount of “fish oil,” look at the actual EPA and DHA amounts listed on the Supplement Facts panel.
What is the best form of fish oil?
Fish oil supplements may contain omega-3s in triglyceride, re-esterified triglyceride, or ethyl ester forms. Different forms have different characteristics, and the overall quality, EPA/DHA content, freshness, and manufacturing standards of the product are also important considerations.
What is the difference between fish oil and cod liver oil?
Both provide EPA and DHA, but cod liver oil also naturally contains vitamins A and D. Because excessive vitamin A or D can be harmful, it’s important to consider your total intake when using cod liver oil.
Is krill oil the same as fish oil?
No. Both provide EPA and DHA, but they come from different marine sources and have different compositions. Krill oil naturally contains phospholipids and astaxanthin in addition to omega-3 fatty acids.
Is algae oil a good alternative to fish oil?
Algae oil can provide a plant-based source of omega-3s, particularly DHA and, in some products, EPA. It is an option for individuals who prefer to avoid fish-derived supplements.
Should fish oil be taken with food?
Many people take fish oil with a meal. Taking it alongside food may also be helpful for tolerability. Always follow the directions on your specific product.
How should fish oil be stored?
Follow the manufacturer’s storage instructions. Some liquid fish oils may require refrigeration after opening. Protecting oils from excessive heat, light, and air can help maintain freshness.
Can fish oil supplements cause a fishy aftertaste?
Some people experience fishy burps or aftertaste with fish oil supplements. Taking the supplement with food, choosing a well-formulated product, or selecting a different omega-3 form may help.
Are fish oil supplements safe for everyone?
Fish oil and omega-3 supplements are not appropriate for everyone. Individuals with fish or seafood allergies should carefully review product ingredients. If you take blood-thinning medication, have a bleeding disorder, are preparing for surgery, are pregnant or breastfeeding, or have other health concerns, consult your healthcare professional before starting an omega-3 supplement.
Can I get enough omega-3s from food?
Yes. Fatty fish such as salmon, sardines, mackerel, and herring are excellent sources of EPA and DHA. Plant foods such as flaxseed, chia seeds, and walnuts provide ALA. Supplements can be useful when dietary intake is limited or when additional omega-3 intake is recommended.
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