Often given to children to avoid vitamin A and D deficiencies, cod liver oil has also been used for a list of conditions, including diabetes, asthma, dyslexia, obesity and arthritic disorders. It has been clinically shown to improve numerous health conditions. However, because of its high vitamin A and D content, which are fat-soluble vitamins stored in the body, taking too much can cause dangerous levels in the body.
History
Historically, cod liver oil was made by collecting a barrel of fresh cod livers after a fishing catch, soaking them in seawater, and allowing it to ferment for several months. The oil would then be siphoned off the top. The modern process is much more sanitary, with the oil being a byproduct of processing fish meal.
Benefits
Cod liver oil has been used for heart and circulatory or blood disorders, according to Medline Plus, because it lowers your level of triglycerides, which are fats associated with cardiovascular disease. The oil reduces the risk of heart disease when taken at the recommended dose on a regular basis. Omega-3 fatty acids, a component of cod liver oil, are known to reduce pain and swelling.
Properties
While providing a rich source of fat-soluble vitamins, cod liver oil is devoid of water-soluble vitamins. As in most fish oils, cod liver oil provides vitamins A, D and E, and contains polyunsaturated fatty acids known as EPA, or eicosapentaenoic acid and DHA, or docosahexaenoic acid, which both play a vital role in metabolism. Cod liver oil also contains sodium, potassium, calcium, magnesium, phosphorus, iron, copper, zinc, sulfur and chloride in trace amounts.
Supplement
Cod liver oil has a dark golden color and is most commonly found in gelatin capsule form. This oil has the flavor and smell of fish, though the higher quality capsules and liquid have a milder aroma with less fish taste. Taking cod liver oil in its pure form may take getting used to. The capsules and liquid should be refrigerated after opening to preserve freshness.
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