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Medical Forum / Diseases and Disorders / Prostate Cancer / July 2005Don't sunbathe to avoid prostate cancer, take a pill instead
my notes - didn't we just have a discussion on this where they said that natural sunlight was better because of the way the body processes vitamin D? ~ curtis ================ Men's Health NewsPublished: Tuesday, 28-Jun-2005 According to a recent study spending long periods in the sun may significantly reduce a man's risk of prostate cancer. Apparently exposure to the sun encourages the body to produce vitamin D, which is known to inhibit the growth of prostate cells. Researchers measured the skin tones of 426 men with advanced prostate cancer and 455 cancer-free men using an instrument called a reflectometer, they then compared unexposed underarm skin to sun-exposed skin on the forehead. They found that the darker a man's skin pigmentation, a measure of his sun exposure, the less likely he was to have prostate cancer. They also discovered that certain genetic variations in the body's vitamin D receptors played roles in the development of prostate cancer. However Dr. Esther John, the lead author on the study, does not recommend sitting in the sun, which is just as well as most dermatologists believe that no amount of sun exposure is safe because of the risk of skin cancer. She says that as the effects from supplements and sun exposure on vitamin D levels in the blood are equal, supplements would be a safer. Despite the fact that it is known that vitamin D is an essential nutrient for other reasons, especially for bone health, as yet no one knows what level of the vitamin is effective in avoiding prostate cancer. Dr. John, an epidemiologist at the Northern California Cancer Center says the findings need to be confirmed by other studies before specific recommendations can be given to the public regarding prostate cancer prevention. The study is published in the June 15 issue of Cancer Research. knowledge is power - growing old is mandatory - growing wise is optional "Many more men die with prostate cancer than of it. Growing old is invariably fatal. Prostate cancer is only sometimes so." http://community.webtv.net/PALMER_ENT/doc > my notes - didn't we just have a discussion on this where they said that > natural sunlight was better because of the way the body processes > vitamin D? ISTR that only a few minutes of sun exposure are necessary to manufacture one's daily vitamin D requirement. Regards, Steve J (snip article) >> my notes - didn't we just have a discussion on this where they said that >> natural sunlight was better because of the way the body processes [quoted text clipped - 8 lines] > > (snip article) If you are close enough to the equator and in the summertime, then a few minutes of sun exposure is sufficient to produce the vitamin D you need. However, last year the Chicago Tribune did an article about this, and in this article they claimed that during February in Chicago, if you were to go outside naked on a sunny day from sunup to sundown, you would end up deficient in your daily requirement of vitamin D. Also, do not be confused by vitamin D2 and vitamin D3. Vitamin D3 is the natural form of vitamin D that is produced by sunlight. Vitamin D2 is a synthetic form of vitamin D that is used to supplement milk, some orange juice, etc. Vitamin D2 will keep people from dying from rickets, but it is not clear that it has the health benefits for prostate cancer which vitamin D3 does (which may explain why a study showed that dairy products were not good for prostate cancer - if the vitamin D2 in the dairy interferes with the binding of vitamin D3). Ed Friedman Quoting me: >> ISTR that only a few minutes of sun exposure are necessary to >> manufacture one's daily vitamin D requirement. He replied > If you are close enough to the equator and in the summertime, then a few > minutes of sun exposure is sufficient to produce the vitamin D you [quoted text clipped - 3 lines] > sundown, you would end up deficient in your daily requirement of > vitamin D. Having been in Chicago during February, I can well believe it. Lotsa luck finding any sunshine at all ;-) And if one is foolish enough to step outside while naked, one will lose certain irreplaceable parts very quickly. Ron might not admit it, but he knows it's true. Regards, Steve J Somebody e-mailed and asked me to post the following info. I make no claims for its accuracy, but since it deals with vitamin D slowing down the growth rate of prostate cancer it is appropriate for this newsgroup. It does make sense to me, since the drug given, cholecalciferol, is the chemical name for vitamin D3. The link is: http://www.ndmnutrition.com/vit_d_&_pros._ca.htm Ed Friedman If you went naked in Sydney (no one would take any notice btw) in February from sun up to sun set you would have nice dose of skin cancer and be a pleasant lobster colour depending on your background genes!!! Seriously if this research on Vitamin D is correct then the incidence of Prostate cancer should be lower in Australia - but somehow I don't think it is? >>> my notes - didn't we just have a discussion on this where they said that >>> natural sunlight was better because of the way the body processes [quoted text clipped - 26 lines] > > Ed Friedman Anecdotal, but I've spent my whole life in the sun with no sunblock. I'm talking about well over a thousand hours a year on Florida beaches and New Mexico and Utah deserts and mountaintops and lakes, often early AM 'til dark, with zero regard to exposure. Someone once said I was the darkest white boy they'd ever seen. What do I have to show for it? A red neck and PC. I.P. >Anecdotal, but I've spent my whole life in the sun with no sunblock. I'm >talking about well over a thousand hours a year on Florida beaches and New [quoted text clipped - 4 lines] > >I.P. You always struck me as a redneck p; -- Reader to complete... -- Please reply to this ng as my email adress is fake: -- Regards -- CC >>Anecdotal, but I've spent my whole life in the sun with no sunblock. I'm >>talking about well over a thousand hours a year on Florida beaches and New [quoted text clipped - 6 lines] >> > You always struck me as a redneck p; No joke. The pale sun shadow beneath my ears and chin are obvious even in mid-winter. I.P. On June 28, I. P. Freely and CC had the following exchange: >>> Anecdotal, but I've spent my whole life in the sun with no >>> sunblock. I'm talking about well over a thousand hours a year on [quoted text clipped - 11 lines] > > I.P. Stop! Stop! You're making me queasy! ;-) Steve J |
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