If you buy cod liver oil in the United States, it probably came from Norway. Norway's Atlantic waters teem with codfish, making the country a top producer and exporter of the therapeutic oil. It contains an abundance of vitamins A and D, as well as the omega-3 fatty acids DHA and EPA. Regularly supplementing your diet with appropriate amounts of these nutrients can yield an array of health benefits.
Diabetes Prevention
Vitamin D and fatty acids EPA and DHA in Norwegian cod liver oil have been determined to help prevent type 1 diabetes in children when taken by their mothers during pregnancy to fortify their bodies and breast milk. Cod liver oil given to infants during their first year of life has the same effect, according to a Norwegian study published in the American Journal of Clinical Nutrition in 2003.
Joint Health
EPA in Norwegian cod liver oil has anti-inflammatory properties that benefit people who suffer from arthritis and other joint ailments by making movement less painful.
Strong Bones
Vitamin D is vital for strong teeth and bones because it aids calcium absorption. It's usually produced through the body's skin upon exposure to sunlight. People living in northern latitudes like Norway, where sun is in short supply in the fall and winter, and others who just don't go outdoors much, can take cod liver oil to avoid vitamin D deficiency. On the other hand, those who do spend a lot of time outdoors in sunny climates should consult their physician before using cod liver oil because it is possible to overdose on vitamin D.
In a 2001 study published by the American Journal of Epidemiology, 3,052 Norwegian women ages 50 to 70 were surveyed, and those who took cod liver oil as children had lower forearm bone density than those who hadn't, which would seem to contradict claims that cod liver oil is good for bones. However, researchers believe the reason for these findings was that the oil taken at that time contained insufficient vitamin D because the interdependence of vitamins D and A wasn't yet known. Vitamin D was being lost during processing, so users were getting too much A. Norway has since adjusted its requirements and processing practices to ensure that its products are nutritionally balanced.
Cardiovascular Health
The omega-3 fatty acids in Norwegian cod liver oil are very much like those found in salmon, and have been linked to improved cardiovascular health. EPA also helps to reduce inflammation in the arteries and aid healing after a heart attack.
Skin Care
Norwegian cod liver oil can be applied to wounds to help them heal faster. Mixed with zinc oxide, it's used to treat diaper rash and sunburn. A daily dose taken orally can help to keep the skin smooth and supple.
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