Americans are diving into krill oil, a potent alternative to fish oil that’s making waves for its omega-3 benefits and superior absorption. Sourced from tiny, shrimp-like crustaceans thriving in the pristine Antarctic Ocean, krill oil is loaded with omega-3 fatty acids that may boost heart health, reduce inflammation, and support brain function, experts say.

Unlike fish oil, krill oil’s omega-3s—EPA and DHA—are bound to phospholipids, making them easier for the body to use. 'Krill oil’s DHA can cross into the retina, helping preserve vision, while fish oil struggles to get there,' says Dr. Joseph Mercola, a Florida-based physician. He adds that krill oil’s ability to penetrate cellular barriers also enhances its power to fight inflammation, sharpen memory, and slow age-related decline.

Krill oil also packs astaxanthin, a robust antioxidant that amplifies its anti-inflammatory effects, notes Dr. David Rizik, an Arizona cardiologist. Plus, krill are less likely to carry toxins like mercury, a concern with larger fish, and their abundance makes them a sustainable choice.

But it’s not all smooth sailing. Krill oil often contains lower EPA and DHA levels than high-quality fish oils and can cost more, Rizik points out. However, its better absorption means you need less to see results. Research on krill oil is still emerging, with fish oil boasting more long-term data for heart and brain health.

For most adults, 500 to 1,000 mg of krill oil daily is enough, Mercola advises, but those with shellfish allergies or on blood thinners should consult a doctor. Pregnant or breastfeeding women should also seek medical advice before adding it to their diet.

As the global krill market surges, driven by demand for omega-3-rich alternatives to fish like salmon and sardines, the choice between krill and fish oil hinges on your health goals and budget. Whole foods remain king, but krill oil is a compelling second-string player.

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