Abstract

Lutein is a yellow-orange carotenoid pigment, often called the "eye vitamin," found in high concentrations in the human macula and retina, as well as in leafy greens and eggs. It acts as a powerful antioxidant and blue-light filter, protecting eye tissues from oxidative damage and age-related decline. It is primarily applied in supplements and fortified foods to prevent macular degeneration (AMD) and cataracts.

Nature & Appearance

It is an oxygen-containing carotenoid called a xanthophyll (related to beta-carotene and vitamin A). It presents as a yellow-red pigment that appears yellow at low concentrations. Common sources include green leafy vegetables like spinach and kale, broccoli, egg yolks, and corn.

Core Functions

• Blue Light Filter: Absorbs high-energy blue light, protecting the retina from oxidative damage.
• Antioxidant: Scavenges reactive oxygen species (ROS) and reduces oxidative stress in eye tissues.
• Structural Support: Maintains retinal cell integrity and supports visual acuity.

Primary Applications

Mainly used for Eye Health to slow age-related macular degeneration (AMD) and cataracts. It is widely found in dietary supplements (capsules/tablets) often combined with zeaxanthin, and used in food fortification for elderly nutrition. Research also suggests benefits for cognitive function and skin protection against UV light.

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