Evidence supporting the use of: Unsaturated fatty acid
For the body system: Eyes

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Synopsis

Source of validity: Scientific
Rating (out of 5): 4

Unsaturated fatty acids, particularly omega-3 fatty acids such as eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), have notable scientific evidence supporting their role in maintaining eye health. DHA is a major structural component of the retina, and its adequate intake is essential for optimal visual development and function. Multiple large-scale studies, including the Age-Related Eye Disease Study 2 (AREDS2), have investigated the effects of omega-3 supplementation on age-related macular degeneration (AMD), one of the leading causes of vision loss in older adults. While results on direct prevention or slowing of AMD progression have been mixed, some epidemiological and clinical studies suggest that higher dietary intake of omega-3s is associated with a reduced risk of developing certain eye diseases, such as dry eye syndrome and diabetic retinopathy. Furthermore, unsaturated fatty acids exhibit anti-inflammatory properties, which may protect the eye from oxidative stress and degeneration. Overall, the use of unsaturated fatty acids for supporting eye health is grounded in a strong scientific rationale, particularly for maintaining retinal structure and function, although not all clinical outcomes have shown benefit for every eye condition.

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