Evidence supporting the use of: Spinach Powder
For the body system: Eyes

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Synopsis

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

Spinach powder is justified for use in supporting the eyes based on scientific evidence. Spinach is a rich source of carotenoids, particularly lutein and zeaxanthin, which are well-known for their role in eye health. These carotenoids accumulate in the macula of the eye and help filter harmful blue light, reducing the risk of age-related macular degeneration (AMD) and cataracts. Numerous epidemiological and clinical studies have shown that higher dietary intake of lutein and zeaxanthin is associated with better visual function and a reduced risk of AMD. Spinach powder, being a concentrated form of spinach, retains these carotenoids, making it a practical supplement for individuals aiming to increase their intake.

In addition to lutein and zeaxanthin, spinach also contains vitamin A (as beta-carotene), which is essential for normal vision. Deficiency in vitamin A can lead to night blindness and other visual impairments. The combination of these nutrients provides a plausible scientific rationale for the use of spinach powder in supporting eye health. However, while the evidence is strong for lutein and zeaxanthin from spinach, the direct clinical evidence specifically on spinach powder supplementation is less robust than for whole spinach or isolated carotenoids. Overall, scientific support is solid, meriting a score of 4 out of 5.

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