Is This One of the Best Nutrients for Your Eyes and Brain?
STORY AT-A-GLANCE While there are about 850 known carotenoids, most are not found in the human body and only lutein, zeaxanthin and astaxanthin cross the blood-retina barrier to form macular pigment. Your retina is an extension of your brain, where lutein also accumulates throughout the human lifespan, hinting at its