Lutein

Lutein belongs to the group of carotenoids and, together with zeaxanthin, is the only carotenoid present in the macula of the eye — the area of sharpest vision. The body cannot produce lutein itself. Natural sources are mainly dark leafy vegetables such as kale and spinach, as well as egg yolk, where lutein appears as a yellow pigment. For the production of dietary supplements, lutein is often extracted from marigold (Tagetes) flower petals, which have particularly high concentrations.