Evidence supporting the use of: Cod Liver Oil
For the health condition: Tuberculosis

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Synopsis

Source of validity: Traditional
Rating (out of 5): 2

Cod liver oil has a long tradition of use in the management of tuberculosis (TB), particularly in the pre-antibiotic era. In the late 19th and early 20th centuries, sanatoriums and physicians frequently recommended cod liver oil as a dietary supplement for TB patients. This practice was based on the recognition that cod liver oil is rich in vitamins A and D, both of which were thought to support immune function and general health. Malnutrition and deficiency in these vitamins were common among TB patients, leading to the rationale that supplementation could be beneficial. Historical medical literature documents its use as a supportive measure to "build up" patients and possibly help them withstand the disease better. However, the scientific evidence supporting its direct effectiveness against tuberculosis is limited. While vitamins A and D do play roles in immune system regulation and may impact the body's response to infection, there is no robust clinical evidence that cod liver oil itself treats or cures tuberculosis. Its use was largely supportive, aiming to improve nutritional status rather than act as an antimicrobial agent. Modern treatment of TB relies on antibiotics, and cod liver oil is not a standard part of evidence-based management. Nonetheless, the historical practice has influenced perceptions of cod liver oil as a healthful supplement, especially in contexts of malnutrition or vitamin deficiency.

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