Evidence supporting the use of: Sweet Potato
For the body system: Eyes

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Table of Contents

Synopsis

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

Sweet potatoes are often associated with eye health due to their high content of beta-carotene, a precursor to vitamin A. Scientific research supports the role of vitamin A in maintaining normal vision and preventing xerophthalmia and night blindness. Sweet potatoes, particularly the orange-fleshed varieties, are among the richest plant sources of beta-carotene. Upon ingestion, beta-carotene is converted in the body into retinol (vitamin A), which is essential for the maintenance of photoreceptor function in the retina. Several epidemiological and clinical studies have shown that diets high in beta-carotene and other carotenoids are linked to a reduced risk of age-related macular degeneration and other eye disorders. The World Health Organization and various nutrition authorities recommend foods rich in beta-carotene, like sweet potatoes, as strategies to combat vitamin A deficiency, particularly in populations at risk. While supplementation is sometimes necessary, consuming whole foods like sweet potatoes is considered an effective and safe way to support eye health. However, the evidence is strongest for preventing deficiency-related vision problems, rather than for treating existing degenerative eye diseases, which is why the rating is moderate.

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