Evidence supporting the use of: Cod Liver Oil
For the body system: Teeth

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Synopsis

Source of validity: Scientific
Rating (out of 5): 4

Cod liver oil is primarily valued for its rich content of vitamins A and D, as well as omega-3 fatty acids. Scientific studies have shown that vitamin D plays a crucial role in calcium metabolism and bone health, which directly impacts the development and maintenance of healthy teeth. Vitamin D deficiency has been linked to an increased risk of dental caries (cavities) and periodontal disease due to impaired mineralization of teeth and alveolar bone. Cod liver oil, as a natural source of vitamin D, can help correct or prevent such deficiencies, thereby supporting oral health.

Additionally, vitamin A is important for maintaining healthy mucous membranes and supporting the immune system, which may help protect against oral infections. Omega-3 fatty acids in cod liver oil also exhibit anti-inflammatory properties, which could be beneficial for periodontal (gum) health.

Several observational and interventional studies have highlighted the role of cod liver oil or its constituent nutrients in reducing the incidence of dental caries and supporting gingival health, especially in populations at risk of deficiency. However, it is important to note that cod liver oil should be used as part of a broader strategy for oral health, including good hygiene and dietary practices. The evidence is relatively strong for the mechanism (via vitamin D), though direct large-scale clinical trials specifically targeting dental outcomes are limited.

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