Evidence supporting the use of: Vitamin A (retinyl acetate)
For the body system: Eyes

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Synopsis

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

Vitamin A, particularly in the form of retinyl acetate, is strongly supported by scientific evidence for its role in supporting eye health. Vitamin A is essential for the maintenance of normal vision. It is a component of rhodopsin, a protein in the retina that absorbs light and is necessary for both low-light (scotopic) and color vision. Deficiency of vitamin A can lead to night blindness and, in severe cases, to xerophthalmia and even irreversible blindness, especially in children. Numerous clinical and epidemiological studies have demonstrated that vitamin A supplementation can prevent and treat these conditions. The World Health Organization (WHO) recognizes vitamin A deficiency as a leading cause of preventable blindness in children globally, and vitamin A supplementation programs have significantly reduced rates of vision impairment in at-risk populations.

While vitamin A supplementation is critical for individuals with or at risk for deficiency, excessive intake can be toxic and should be avoided. For the general population with adequate dietary intake, additional supplementation does not further enhance vision but remains crucial in populations where deficiency is prevalent. Thus, the use of vitamin A (retinyl acetate) to support the eye body system is strongly validated by scientific evidence.

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