Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Vitamin A has a scientifically established role in supporting the lungs and overall respiratory health. This fat-soluble vitamin is critical for maintaining the integrity and function of epithelial tissues, which line the respiratory tract and serve as the body's first line of defense against pathogens. Deficiency in vitamin A can impair mucosal barriers, making the lungs more susceptible to infections and injury. Research has shown that vitamin A is essential for the normal development and differentiation of lung tissue, especially during fetal growth and early childhood. Several studies have found that vitamin A supplementation can reduce the incidence and severity of respiratory infections, particularly in populations at risk of deficiency, such as young children and pregnant women in low-resource settings. However, in well-nourished populations, supplementation does not appear to provide significant benefit for preventing respiratory illnesses. High doses of vitamin A can be toxic and should be avoided, as excessive intake has been linked to adverse respiratory outcomes, including increased risk of lung cancer in smokers. Overall, while vitamin A is crucial for lung health, its supplementation is most justified in the context of deficiency or increased physiological need, rather than as a universal remedy for respiratory issues.

More about vitamin A
More about Lungs

Other ingredients that support Lungs

Other body systems supported by vitamin A

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