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It is made from krill, a type of small crustacean consumed by whales, penguins and other sea creatures. Like fish oil, it is a source of docosahexaenoic acid DHA and eicosapentaenoic acid EPA , types of omega-3 fats found only in marine sources. They have important functions in the body and are linked to a variety of health benefits 1 , 2 , 3 , 4.
Krill oil is sometimes marketed as being superior to fish oil, though more research on that is needed. Regardless, it may have some important health benefits. However, some evidence suggests that the fats found in krill oil may be easier for the body to use than those from fish oil, since most omega-3 fats in fish oil are stored in the form of triglycerides 6.
On the other hand, a large portion of the omega-3 fats in krill oil can be found in the form of molecules called phospholipids, which may be easier to absorb into the bloodstream 6. A few studies found that krill oil was more effective than fish oil at raising omega-3 levels, and hypothesized that their differing forms of omega-3 fats might be why 6 , 7.
Another study carefully matched the amounts of EPA and DHA in krill oil and fish oil, and found that the oils were equally effective at raising levels of omega-3s in the blood 8. More research is needed to determine whether krill oil is actually a more effective, bioavailable source of omega-3 fats than fish oil.
Krill oil is an excellent source of healthy fats. The omega-3 fats in krill oil may be easier to absorb than those in fish oil, but more studies are needed to say for sure. Omega-3 fatty acids like those found in krill oil have been shown to have important anti-inflammatory functions in the body 9.
In fact, krill oil may be even more effective at fighting inflammation than other marine omega-3 sources because it appears to be easier for the body to use. One test-tube study found that it reduced the production of inflammation-causing molecules when harmful bacteria were introduced to human intestinal cells 9. A study of 25 people with slightly raised blood fat levels found that taking 1,mg supplements of krill oil daily improved a marker of inflammation even more effectively than a 2,mg daily supplement of purified omega-3s Although there are only a few studies investigating krill oil and inflammation, they have shown potentially beneficial results.
Krill oil contains inflammation-fighting omega-3 fats and an antioxidant called astaxanthin. Only a few studies have specifically investigated the effects of krill oil on inflammation, but they have all found beneficial effects. Because krill oil seems to help reduce inflammation, it may also improve arthritis symptoms and joint pain, which often result from inflammation. In fact, a study that found krill oil significantly reduced a marker of inflammation also found that krill oil reduced stiffness, functional impairment and pain in patients with rheumatoid or osteoarthritis It also increased their range of motion Additionally, researchers studied the effects of krill oil in mice with arthritis.
When the mice took krill oil, they had improved arthritis scores, less swelling and fewer inflammatory cells in their joints Please note the date of last review or update on all articles.
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