Synopsis

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

Various types of juice, particularly those derived from fruits and vegetables rich in antioxidants and vitamins, have been scientifically investigated for their potential benefits to eye health. Notably, juices such as carrot, orange, and spinach contain high levels of vitamin A (in the form of beta-carotene), vitamin C, lutein, and zeaxanthin—nutrients associated with maintaining healthy vision. Vitamin A is crucial for the proper functioning of the retina and prevention of night blindness, while vitamin C and other antioxidants help combat oxidative stress, a factor implicated in age-related macular degeneration and cataract formation. Several epidemiological studies suggest a correlation between higher intake of fruits and vegetables (and by extension, their juices) and decreased risk of certain eye diseases. However, whole foods are generally preferred over juices due to their fiber content and lower glycemic impact. While there is scientific rationale for consuming nutrient-rich juices in support of eye health, direct clinical trials with juice as the intervention are limited, and benefits are often extrapolated from studies on whole fruits and vegetables or individual nutrients. Thus, while evidence exists, it is moderate and context-dependent, supporting a rating of 3 on the scale provided.

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