Evidence supporting the use of: Fish (including shell)
For the body system: Eyes

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Synopsis

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

Fish and shellfish are widely recognized for their beneficial effects on eye health, primarily due to their high content of omega-3 fatty acids, especially docosahexaenoic acid (DHA). DHA is a major structural fat in the retina, and adequate levels are associated with proper retinal function. Numerous scientific studies have shown that diets rich in omega-3 fatty acids can help reduce the risk of age-related macular degeneration (AMD), the leading cause of vision loss in older adults. Clinical evidence, such as the Age-Related Eye Disease Study (AREDS) and subsequent research, supports a protective role for omega-3s against dry eye syndrome and possibly other degenerative eye conditions. Shellfish also provide important micronutrients like zinc, which is essential for retinal health and night vision. While fish consumption is not a standalone cure for eye diseases, the evidence supporting its preventive role is robust, especially when part of a balanced diet. Therefore, the use of fish and shellfish to support the eyes is grounded in both nutritional science and clinical research, making its application for this body system scientifically justified.

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