Dec. 3, 2004 — Eating parcels of spinach and other verdant green vegetables may offer assistance protect your eyes from harm caused by the sun and reduce the hazard of cataracts, concurring to a unused think about.
In spite of the fact that vitamin manufacturers have touted the benefits of the cancer prevention agents lutein and zeaxanthin in promoting eye health for a long time, researchers say until presently there has been little to back those claims.
But their ponder gives unused evidence that these antioxidants, which are found in plants such as spinach, kale, and collard greens, can without a doubt offer assistance anticipate cataracts by securing the eyes from the damaging impacts of bright daylight.
“Our comes about are the primary to supply physical evidence recommending that lutein and zeaxanthin diminish harm caused by bright radiation,” says analyst Joshua Bomser, assistant professor of nourishment at Ohio State University, in a news discharge.
Together with other natural, lifestyle, and acquired chance factors related with cataracts, analysts say presentation to bright radiation from sunlight and the stress it causes appears to be a major donor to the development of cataracts.
Nearly 20 million individuals within the U.S. endure from cataracts. The condition occurs when the focal point of the eye gets to be cloudy, making it troublesome or nearly impossible to see clearly. The hazard of cataracts increases with age.
Verdant Greens Battle Cataracts
Within the study, published in the December issue of the Journal of Sustenance, researchers inspected the effects of lutein and zeaxanthin on samples of human eye lens cells in the laboratory. They moreover compared the effects of these cancer prevention agents on the cells to the effects of another antioxidant thought to move forward eye health, vitamin E.
Researchers treated the cells with different concentrations of the cancer prevention agents and then exposed them to bright radiation.
“The dose of UVB radiation we used on the cells is almost the same amount a person receives when they get a gentle tan,” says Bomser.
Including lutein and zeaxanthin to the cells diminished signs of ultraviolet damage by 50%-60%. Vitamin E reduced the same signs of harm by 25%-32%.
“The focal point is equipped with antioxidant defense components [that] protect against the destructive impacts of bright radiation and oxidative stress,” says Bomser. “In addition to protective enzymes and compounds like vitamins C and E, we think that low concentrations of lutein and zeaxanthin in the eye lens offer assistance shield the eye from the hurtful effects of UVB radiation.
“Lutein and zeaxanthin gather within the retina and in the focal point of the eye, but we’re not sure how they reach the eye within the to begin with put,” says Bomser. “They travel through the circulatory system, but the lens doesn’t have a blood supply.”