Cod liver oil is a nutritional supplement consumed for its vitamin and mineral properties and is typically swallowed as a liquid or in capsule form. Traditional cod is a fish that is beneficial to health because of its lean protein, high mineral content and omega-3 fatty acids, known to benefit cardiovascular health. Cod liver oil supplements are used to eliminate the preparation time of eating traditional fish while still providing a wide array of vitamins, minerals and nutrients that greatly benefit overall health.
Cod liver oil is a helpful supplement for dietary functioning because it contains vitamins A and D and the omega-3 fatty acids that aid in reducing inflammation in the body. The vitamins in cod liver oil are advantageous for brain function, bone strength and visual health. Cod liver oil has also been shown to reduce unhealthy cholesterol levels and lower risks of heart disease. A prevalent supplement in Europe, cod liver oil is gaining popularity in the rest of the world due to its positive anti-inflammatory effects for arthritis and pain relief. In fact, a study conducted by Cardiff University scientists revealed that cod liver oil is indeed "beneficial to relieving the pain of those suffering from arthritis, and ingesting the appropriate amount per day has valuable anti-inflammatory benefits."
What to Look for
Cod liver oil comes in a variety of brands and formats, but perhaps the most important thing to look for is the quality of the oil. Oil that is splotchy and separated in consistency is a mark of poor quality. Almost any oil should come in a dark, closed container. If purchasing cod liver oil supplements in capsule form, avoid buying large bulky bottles, which have an increased risk of going rancid. Instead, purchase small amounts of quality cod liver capsules, keep them in the refrigerator after breaking the seal and be wary not to exceed the expiration date of the pills.
Common Pitfalls
One of the primary complaints when taking fish oil is its smell and taste. Instead, purchase closed capsules, which negate the negative smell and fishy taste of typical oils. Another primary concern of cod liver oil is possible high levels of mercury, known to have negative effects on healthy brain function and pregnancies. Although common contaminants such as mercury, PCP and lead are a concern, the Association of Analytical Communities tests "all fish oil products to insure their safety and quality before approving for sale to the public." Nevertheless, limiting or reducing daily intake of fish oils in any form is continually advised for expecting mothers as a precaution to insure safety.



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