(1) Cataract patients also tend to be deficient in vitamin A and the carotenes, lutein and zeaxanthin.(2) In this study, visual function is improved with lutein alone or lutein together with other nutrients.(3) While the root of the beet is a nutritional powerhouse, the leaves are just as potent, containing antioxidant carotenoids, chlorophyll and lutein .(4) The yellow colour comes largely from carotenoids, which hens get from plant foods, or lutein , which is added to feeds specifically to colour egg yolk.(5) Companies don't usually test for phytochemicals like lutein or lycopene because they're not yet considered nutrients.
