喝咖啡能拯救视力
[font=Verdana, Arial, Tahoma][size=14px][b]A daily cup of coffee can save your eyesight, scientists claim.[/b][/size][/font][font=Verdana, Arial, Tahoma][size=14px][b]科学家称，每日一杯咖啡可以拯救你的视力。[/b][/size][/font]
[font=Verdana, Arial, Tahoma][size=14px]A chemical found in the drink prevents deteriorating eyesight and possible [url=http://www.enread.com/news/cultureandedu/96613.html]blindness[/url] from retinal degeneration due to[b] glaucoma（青光眼）[/b], ageing and diabetes.[/size][/font]
[font=Verdana, Arial, Tahoma][size=14px]Researchers at Cornell Univesity in New York were looking at coffee's antioxidant effects when they made the discovery.[/size][/font]
[font=Verdana, Arial, Tahoma][size=14px]Coffee contains 1 percent caffeine but between 7 and 9 percent [b]chlorogenic acid（绿原酸）[/b]which is a strong antioxidant.[/size][/font]
[font=Verdana, Arial, Tahoma][size=14px]The study, published in the Journal of Agricultural and Food Chemistry, found that in mice this acid prevented retinal degeneration.[/size][/font]
[font=Verdana, Arial, Tahoma][size=14px]Chang Y. Lee, a professor of food science and the study's senior author said: 'The retina is a thin tissue layer on the inside, back wall of the eye with millions of light-sensitive cells and other nerve cells that receive and organise visual information.[/size][/font]
[font=Verdana, Arial, Tahoma][size=14px]'It is also one of the most metabolically active tissues, demanding high levels of oxygen and making it prone to oxidative [url=http://www.enread.com/news/cultureandedu/96613.html]stress[/url].[/size][/font]
[font=Verdana, Arial, Tahoma][size=14px]'The lack of oxygen and production of free radicals leads to tissue damage and loss of sight.'[/size][/font]
[font=Verdana, Arial, Tahoma][size=14px]He added: 'The study is important in understanding functional foods, that is, natural foods that provide beneficial health effects.[/size][/font]
[font=Verdana, Arial, Tahoma][size=14px]'Coffee is the most popular drink in the world, and we are understanding what benefit we can get from that.'[/size][/font]
[font=Verdana, Arial, Tahoma][size=14px]Previous studies have shown that coffee also cuts the risk of such chronic diseases as Parkinson's, prostate cancer, diabetes, Alzheimer's and age-related cognitive declines.[/size][/font]
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