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How do Zeaxanthin and Lutein differ? Are there benefits to taking both?

Zeaxanthin and lutein are molecularly similar however they each orient themselves differently in the cell with Zeaxanthin having two ends reactive for antioxidant activity, and lutein only one. The deposition of these antioxidants in the eye varies as Zeaxanthin is in higher concentration in the cone rich center of the macula and lutein is in higher concentration in the peripheral area of the macula. The eye preferentially deposits Zeaxanthin in the fovea (the very center of the macula containing the highest density of vision cells in the retina), suggesting a distinct and different role for each.