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Superior bioavailability? The krill v fish oil debate rumbles on

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Of course, any wide-scale collection of any one product from the ocean is bound to have an impact–it’s just a matter of how much. And it’s definitely true that both krill and fish oil offer incredible health benefits, though the cost may or may not be worth it to you.

When the effects of the krill and fish oil were examined together, it was found that the combination shortened the lifespan of mice by 6.6% in comparison to the control group. Researchers concluded that when taken together, the consumption of omega-3 fatty acid-rich fish and krill oils are unlikely to increase lifespan or health of healthy individuals.

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Another factor that many people believe distinguishes between krill and fish oil is the presence, in krill oil, of a poweful antioxidant known as astaxanthin. This carotenoid pigment has been shown to exert a number of beneficial effects in humans, including protection against oxidative stress, reduction in inflammation, and even benefits in the treatment of cardiovascular disease. Unfortunately, astaxanthin is found in krill oil in amounts much lower (about fifty-fold less) than levels which have been found to exert this therapeutic effect (3). While many krill oil supplements are fortified with additional antioxidants, so are many fish oils, and both types of oil are high in vitamin A, which is a potent natural antioxidant.

Of course, any wide-scale collection of any one product from the ocean is bound to have an impact–it’s just a matter of how much. And it’s definitely true that both krill and fish oil offer incredible health benefits, though the cost may or may not be worth it to you.