Lutein, like the other useful eye antioxidant zeaxanthin, is a substance with a carotenoid structure, resembling beta-carotene (pre-vitamin A). Lutein is a xanthophyll and is synthesized in many green plants such as spinach and kale.
Lutein exhibits powerful antioxidant properties and is metabolized primarily in the eyes.
The retina of the eye synthesizes lutein, whose main purpose is to protect it against the blue light and the free radicals.
The intake of lutein supplementation indicates positive results, whether this is lutein in its free form or lutein ester.
The intake of 10.23 mg of lutein ester and 5.5 mg of free lutein leads to immediate increase in the lutein serum with 20-29% and a solid increase of 82% of its after 10 days of dosing.
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