luteiin

Lutein is a naturally occurring carotenoid, a type of pigment found in plants. It is one of the most abundant carotenoids found in the human eye, particularly in the macula and retina. Lutein is synthesized by plants, algae, and some bacteria, and it is typically obtained through dietary consumption of leafy green vegetables like spinach, kale, and collard greens, as well as other foods such as eggs and corn.

Chemically, lutein is a xanthophyll, which is a subclass of carotenoids. It has antioxidant properties, meaning it can help protect cells from damage caused by free radicals. Free radicals are unstable molecules that can contribute to aging and various diseases. The body cannot produce lutein on its own, so it must be obtained from external sources.

Within the eye, lutein is believed to play a crucial role in vision health. It acts as a blue light filter, absorbing high-energy blue light waves that can potentially harm the retina. It also contributes to the antioxidant defense within the macula. Research has investigated the potential benefits of lutein supplementation for eye conditions such as age-related macular degeneration (AMD) and cataracts, although more studies are ongoing to fully establish its efficacy in these areas. Lutein is often found in supplements alongside zeaxanthin, another carotenoid that is also concentrated in the macula.