Evidence supporting the use of: Zinc Yeast
For the body system: Eyes

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Synopsis

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

Zinc yeast is used as a dietary supplement to support various body systems, including the eyes, due to its zinc content. Zinc is an essential trace mineral that plays a crucial role in maintaining eye health. Scientific studies have demonstrated that adequate zinc intake is important for normal visual function and for protecting the eyes against age-related conditions. The Age-Related Eye Disease Study (AREDS), a large clinical trial sponsored by the National Eye Institute, found that supplementation with zinc (in combination with antioxidants) significantly reduced the risk of advanced age-related macular degeneration (AMD), a leading cause of vision loss in older adults. Zinc is involved in the metabolism of vitamin A in the retina and helps maintain the structural integrity of eye cells.

Zinc yeast is a form of zinc that is bound to yeast, which may enhance its bioavailability compared to inorganic forms. However, the scientific support for zinc yeast specifically, as opposed to other forms of zinc, is limited; most evidence relates to zinc in general. While zinc supplementation can benefit individuals with low zinc status or increased risk of eye disease, excessive zinc intake can have adverse effects, so supplementation should be approached cautiously. In summary, there is moderate scientific evidence supporting zinc (and by extension, zinc yeast) for eye health, particularly in the context of age-related macular degeneration.

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