Krill is a shrimp like small crustacean mainly found in cold ocean waters. It is estimated that more than 500 million tons of krill lives in just in northern seas. These crustaceans contain omega-3 fatty acids known as eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). Omega-3 fatty acids contained in krill oil helps to reduce risk of heart disease more than that contained in fish oil and it is more absorbable than fish oil. Krill oil also contains more powerful astaxanthin, an antioxidant that helps reduce stress, brings cardiovascular benefits, protects against UVA damage, promote joint health, and bring relief from severe uterine pain during menstruation and emotional symptoms of premenstrual syndrome. A study by McGill University found that krill oil contains more effects than fish oil on cholesterol. Another study conducted in Canada found that 300 mg of krill oil taken daily for 7 and 14 days significantly reduced arthritic symptoms and prevent inflammation.
Krill oil cost more than fish oil at this time. Benefits of krill oil may be smaller compared to the price of fish oil and more research to determine beneficial effects may be needed. Before swapping krill oil for fish oil, one should consult their medical professional.