Evidence supporting the use of: Carotenoids
For the health condition: Night Blindness

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Synopsis

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

Carotenoids, particularly beta-carotene, are scientifically validated for their role in supporting and treating night blindness. Night blindness (nyctalopia) is most commonly caused by a deficiency in vitamin A, an essential nutrient for the formation of rhodopsin, a photopigment in the retina that is critical for vision in low-light conditions. Beta-carotene is a provitamin A carotenoid, meaning it can be converted by the body into active vitamin A (retinol). Numerous clinical and epidemiological studies demonstrate that supplementation with vitamin A or beta-carotene can reverse or prevent night blindness in populations at risk of deficiency, such as children and pregnant women in developing countries. The World Health Organization (WHO) recommends vitamin A supplementation as a public health intervention to reduce the risk of blindness and mortality in children. Historical reports also document the use of foods rich in carotenoids, such as carrots and other yellow/orange vegetables, to alleviate symptoms of poor night vision. However, the primary foundation for their use is robust scientific evidence linking carotenoid intake and vitamin A status to the prevention and treatment of night blindness.

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