I'd like to say thank you for your show. I enjoy it thoroughly.
I have a question most of my friends laugh at.
I heard a while back that you are more likely to get sunburn if you are wearing sunglasses. I have put the theory to the test and it has worked for me. I didn't put on sunscreen or wear sunglasses, sun bathed for a few hours and I did not get sun burn. Then I did not put on sunscreen and wore my sunglasses, had sun burn within a couple hours. Of course I don't abuse this theory, I know eventually everyone will burn, especially fair skin . ( I am not fair skinned. )
I found some information on the internet: this link (quoted below) and then this one (more in depth).
*DO SUNGLASSES CAUSE SUNBURN?*
SKIN colour changes when you are exposed to the sun because your body is told to produce more melanin - skin pigment - by your pituitary gland.
Melanin stops your skin from absorbing ultraviolet light.
It is this ultraviolet light which has the effect of burning the skin.
But the pituitary gland only knows how much melanin to make from the signals it gets from the eye. If the eye says it's sunny, the pituitary gland goes into overdrive.
But with shades on, the gland is fooled so less melanin is produced - meaning a higher risk of burning.
With your access to some of the top brains in science, could prove or debunk this theory? I know you probably have hundreds upon hundreds of questions coming to you weekly, so if you can't get to this question anytime soon I understand, but if you are able to address this, I would be grateful.
Thanks again for your great podcasts. I have listened to other podcasts, but I have to say your ability to get "down to the brass tacks" makes your show a lot more enjoyable and informative.
Winston-Salem, NC USAAsked by Michael Patella Find out more on our podcast page ...or Listen to the Answer
or [download as MP3]