What characteristic of Lycium barbarum sets it apart from many dark berries like blueberries in eye-health discussions regarding carotenoids?
Answer
High concentration of zeaxanthin
The text explicitly notes that while many dark berries contain lutein, the high concentration of zeaxanthin specifically in goji berries often differentiates them in dietary discussions centered on eye health. Zeaxanthin is a potent carotenoid known to accumulate in the macula of the eye. Its presence is crucial because it functions as a natural filter protecting the eyes from potentially damaging blue light, thereby supporting long-term visual acuity and helping to guard against age-related macular degeneration and general oxidative damage associated with vision.
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