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SunTanMan
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 Posted - 12/18/2007 : 7:06:22 PM
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I had heard about this before and recently saw this article.
The full article can be read at express.co.uk..
I snipped a little bit:
"SUNGLASSES RAISE RISK OF CANCER
Sunglasses cause the brain to think it's dark so you don't tan
Sunday June 3,2007
By Lucy Johnston, Health Editor Have your say(0)
SUN worshippers are being warned that wearing sunglasses could increase the risk of skin cancer.
The glasses reduce the amount of ultra-violet light reaching key areas of the eye, tricking the brain into believing less harmful rays have penetrated the body.
The result, doctors believe, is that the body produces less of a natural substance it needs to defend itself against harmful ultraviolet light.
The theory will be published tomorrow in a book called Survival Of The Sickest, which analyses the origins of modern disease.
It was written by disease specialist Dr Sharon Moalem, who has studied the process of tanning and ultra-violet, or UV, light.
Sunglasses make the brain think it's dark and this means you're not starting the natural process of tanning.
Disease specialist Dr Sharon Moalem".
I'm sure this will need more research, but I am going ahead and leaving the sunglasses in the beach bag.
STM
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pilot
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Posted - 12/18/2007 : 9:24:46 PM
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I sort of doubt it...
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Diger
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Posted - 12/18/2007 : 10:43:36 PM
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It all sounds more than a little far fetched. Your skin is the largest organ of the body, to think it needs input from your eyes to know when to tan. Sorry I just don't get it.
Diger
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james423
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Posted - 12/18/2007 : 11:06:57 PM
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If this person really is a medical doctor, he can't really be as stupid as this quote makes him seem. I always wear sunglasses when tanning & I know it isn't dark. I can still see the sunlight & I can feel the sun's rays on my skin. Even if one is out a little too long in the sun, one can feel a kind of burning sensation (well before the skin appears sunburned). This is common sense & doesn't require a scientific study -especially not one that comes to this kind of conclusion. This "theory" is ludicrous. I for one would not risk my eyesight by not wearing sunglasses.
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Edited by - james423 on 12/19/2007 09:53:09 AM |
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cony
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 Posted - 12/19/2007 : 07:14:36 AM
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 So now I have to decide if I want to risk getting skin cancer because my eyes don't know that there is too much UV - O R - I can damage my eyes due to the strong sun and glare! 
 It's a good job I am not blind, as I would suffer from terminal skin cancer! 
Cony
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kangaroo
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Posted - 12/19/2007 : 07:25:09 AM
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That's just dumb. The brain is not in control of every physiological event in your body. Your skin automatically releases melanin after exposure to UVA rays.
Looks like other people think he is a crackpot:
http://sandwalk.blogspot.com/2007/12/sharon-moalem-exposed.html
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Edited by - kangaroo on 12/19/2007 07:29:50 AM |
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Diger
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Posted - 12/19/2007 : 09:07:17 AM
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If the whole conclusion is based on the timeline of increased use of sunglasses, then what about the increased use of sunscreen that happened at the same time. I have heard the over use of sunscreen has stoped us from tanning and building up the skins natural defence.
Diger
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NaturistDoc
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Posted - 12/19/2007 : 8:32:28 PM
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It is true that there are neural pathways from the retina to the brain that do not directly subserve vision. It is thought that these pathways may, by reflecting the diurnal light/dark cycle, help regulate the circadian rhythms of the body. The notion that the eyes can subconsciously influence the release of, say, pro-opiomelanocortin or some other melanocyte-stimulating factor from the brain isn't all that far-fetched. Nor, I hasten to add, is it proven. We'll know more in a few years.
Anecdotally, haven't we all seen extremely tanned people at resorts or beaches ... wearing sunglasses? For my money, the risk of cataracts is reason enough to don the shades.
Doc
(Note the shades and hat)
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Cheri
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Posted - 12/19/2007 : 8:48:15 PM
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I always wear sunglasses outdoors and if you buy yours off the shelf or from an optical shop make sure you have the protection you need against the various types of rays.
Cheri
Doing what I can to positively promote nudism
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Fulldraw
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Posted - 12/21/2007 : 10:12:28 PM
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There are a lot of risks in life this one seams kind of low on the scale. Here is a tip for everyone: 1. IF IT IS MADE BY MAN, DON’T EAT IT. 2. IF YOU CAN’T EAT IT DON’T PUT IT ON YOUR SKIN. Yes, I know I can’t do it either, but it is still true.
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Sunglasses-Do They Cause Skin Cancer?
