RightHealth Daily Dose » eyes http://dailydose.righthealth.com We feature the one health item you simply cannot afford to miss. Fri, 19 Mar 2010 04:18:31 +0000 http://wordpress.org/?v=2.8.4 en hourly 1 Green Tea Good For Eyes? http://dailydose.righthealth.com/cancer-oncology/green-tea-good-for-eyes/ http://dailydose.righthealth.com/cancer-oncology/green-tea-good-for-eyes/#comments Mon, 22 Feb 2010 08:06:11 +0000 Steven http://dailydose.righthealth.com/?p=2723 Photo by motograf (Flickr)

Green tea has been touted for various health benefits (such as fighting against heart disease and cancer) largely due to it’s high level of antioxidants called catechins. Now, Chinese scientists have found that the catechins appear to be able to penetrate into the tissues of the eyes, especially into the retina, which is the light-sensing tissue that lines the back of the eye. The study, published in the Journal of Agricultural and Food Chemistry, demonstrated that this antioxidant activity can last for up to 20 hours after drinking green tea extract. The authors theorize that the readily absorbed antioxidants help to protect the delicate tissues of the eye from glaucoma and other eye diseases. However, it must be noted that East Asians experience the highest rate of blindness from one common type of glaucoma, despite being among the largest consumers of green tea. Therefore, further studies will definitely be needed to confirm any protective ocular effects of green tea in humans. [Via WebMD]

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]]> http://dailydose.righthealth.com/cancer-oncology/green-tea-good-for-eyes/feed/ 5 Some Facial Expressions Are Intrinsic, Not Learned http://dailydose.righthealth.com/medical-curiosities/some-facial-expressions-are-intrinsic-not-learned/ http://dailydose.righthealth.com/medical-curiosities/some-facial-expressions-are-intrinsic-not-learned/#comments Tue, 30 Dec 2008 05:37:37 +0000 Steven http://dailydose.kosmix.com/?p=1005 New research from San Francisco State University is thought to be the first to show that sighted and blind people use the same facial expressions in response to certain emotional states. By studying both sighted and blind Olympic athletes the researchers found that 85 percent of silver medalists, regardless of visual ability, showed the same “social smile”, where only the mouth smiles – compared with a “real” or Duchenne smile (named after the 19th century French neurologist who discovered that a smile which results from true happiness involves not only the mouth but also the eyes). “Individuals blind from birth could not have learned to control their emotions in this way through visual learning so there must be another mechanism,” said the researchers. This is why they believe that some facial expressions may be intrinsic, not learned.

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