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Omega-3 fatty acids, we have often heard about them and some of us remember them through fish oil. But that is not the only source where we find omega-3 fatty acids. Have you heard about krill oil? Let’s introduce both options and reveal which one is the best.
What are omega-3 fatty acids?
Let’s start from the beginning and explain what omega-3 fatty acids actually are. They are healthy fats that play a key role in our body. They belong to essential nutrients, meaning the body cannot produce them on its own, so we must obtain them through food or supplements. The most important omega-3s include EPA (eicosapentaenoic) and DHA (docosahexaenoic), which contribute to the health of the heart, brain, eyesight and help to reduce inflammation in the body.
If you want to learn more, we recommend the article: Why does our body need omega-3? Effects and benefits
Fish oil or the classic
Fish oil comes from the fatty tissues of oily fish such as salmon, mackerel, or sardines. Products containing omega-3 fatty acids often contain fish oil, which is rich in them. It mainly contains two important omega-3 acids – EPA (eicosapentaenoic) and DHA (docosahexaenoic), which we already mentioned in the introduction.
Effects of fish oil
Among the effects for which fish oil is so well-known and valued are:
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Heart and vascular health: EPA and DHA in fish oil are proven to be beneficial for cardiovascular health. They help reduce triglyceride levels, support healthy cholesterol, and may improve vascular function.
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Brain support: DHA is essential for proper brain function, improves cognitive functions, and prevents decline in mental abilities in old age. It is also important for brain development in children.
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Anti-inflammatory effects: EPA and DHA have strong anti-inflammatory effects, which can help with inflammatory diseases such as arthritis or inflammatory bowel diseases.
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Eye health: DHA is a significant component of the retina, which helps maintain eye health and protects against degeneration.
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Immune system support: Omega-3 acids can modulate immune response and help prevent some autoimmune diseases.
Advantages of fish oil
- High content of EPA and DHA – ideal for supporting the heart, brain, and reducing inflammation
- Easy availability and lower price
- Long history of use and proven effectiveness
Disadvantages of fish oil
- Some products may contain heavy metals or toxins (therefore it is important to choose quality, purified oil)
- For some people, it can cause fishy aftertaste or heartburn
- EPA and DHA are in triglyceride form, which is less absorbable than in krill oil
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Antioxidant astaxanthin: What is it? Krill oil is rich in astaxanthin, a powerful antioxidant that protects cells from oxidative stress and can support skin health. Astaxanthin also has anti-inflammatory effects.
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Support for joints and musculoskeletal system: Due to its anti-inflammatory effects, krill oil can help with arthritis and other joint-related conditions.
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Better tolerance: Krill oil is better tolerated and most people do not experience fishy aftertaste or digestive problems that sometimes occur with fish oil.
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Possible support for weight loss: Some studies suggest that krill oil may help with body weight regulation due to its ability to support fat metabolism.
Advantages of krill oil
- Better bioavailability thanks to phospholipids
- Contains antioxidant astaxanthin, which protects cells from oxidative stress
- Less typical fishy aftertaste – most people tolerate it better
- May have a faster onset of effects due to efficient absorption
Disadvantages of krill oil
- Higher price than fish oil
- Contains less omega-3 per capsule than fish oil, so dosing should be considered
- Not suitable for people allergic to crustaceans
Which oil is better?
If you are looking for a classic, affordable option that works well, choose a quality fish oil. If you care about fast absorption, better tolerance, and bonuses like astaxanthin, krill oil is a great premium choice.