Why Lutein & Zeaxanthin are vital for healthy vision.
Good nutrition is important to keep your eyes healthy. Researchers have linked two very important eye nutrients that play a key role in healthy vision. Lutein (LOO-teen) and Zeaxanthin (zee-ah-ZAN-thin), both are potent antioxidants and are best known for protecting your eyes and may reduce your risk for macular degeneration and cataracts.
Lutein and zeaxanthin are two types of carotenoids (kuh-RAH-teh-noids), which are yellow to red pigments found widely in vegetables and other plants and lutein is a yellow pigment, in high concentrations it appears orange-red.
Both lutein and zeaxanthin can also be found in high concentrations in the macula of the human eye. The macula is essential for vision. Lutein and zeaxanthin work as important antioxidants in this area by protecting your eyes from harmful free radicals. It’s thought that a reduction of these antioxidants over time can impair eye health. Along with other natural antioxidants, including vitamin C, beta-carotene (vitamin A) and vitamin E, these important pigments guard the body from damaging effects of free radicals, which are reactive molecules that can destroy cells and play a role in many diseases. It is also believed that lutein and zeaxanthin in the macula block blue light from reaching the underlying structures in the retina, thereby reducing the risk of light-induced oxidative damage that could lead to macular degeneration (AMD).
Unfortunately, the human body does not naturally make the lutein and zeaxanthin it needs. This is why getting daily amounts of lutein and zeaxanthin through your diet or nutritional supplements can help maintain good eye health.
Foods that Contain Lutein and Zeaxanthin
Diets rich in these two nutrients may help hold off age-related eye diseases. The best natural food sources of lutein and zeaxanthin are green leafy vegetables and other green or yellow vegetables. Among these, cooked kale and cooked spinach top the list.
Key sources of these carotenoids include kale, parsley, spinach, broccoli and peas. Orange juice, honeydew melon, kiwis, red peppers, squash and grapes are also good sources of lutein and zeaxanthin.
In addition, egg yolk may be an important source of lutein and zeaxanthin, as the high fat content of the yolk may improve the absorption of these nutrients.
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Lutein and Zeaxanthin Supplements
Because of the benefits of lutein and zeaxanthin, many nutritional companies have added these carotenoids to their multiple vitamin formulas. Others have introduced special eye vitamins that are predominantly lutein and zeaxanthin supplements.
Some popular lutein and zeaxanthin supplements include:
- MacuHealth with LMZ3 (MacuHealth LLC)
- EyePromise Zeaxanthin (Zeavision)
- ICaps Eye Vitamin Lutein & Zeaxanthin Formula (Alcon)
- Macula Complete (Biosyntrx)
- MacularProtect Complete (ScienceBased Health)
- MaxiVision Ocular Formula (MedOp)
- OcuGuard Plus (TwinLab)
- Ocuvite (Bausch + Lomb
The source of lutein in many lutein supplements is marigold flowers, while for zeaxanthin it is often red peppers. If you choose a lutein and zeaxanthin supplement, make sure it’s a high quality product from a reputable dietary supplement company.
Be sure to keep in mind that individuals sometimes react differently to certain supplements, which can have unintended effects such as adverse reactions with medications. Consult with your physician or eye doctor before trying any vision supplements.
Remember that taking dietary supplements does not replace a healthy diet. Eating a well-balanced diet that includes plenty of fruits and vegetables usually is the best way to get the important eye nutrients you need.