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Chockstone Forum - General Discussion

General Climbing Discussion

Topic Date User
Toxic Climbing Water Bottles 12-Oct-2007 At 4:54:13 PM The Keeper
Message
Cruze - you are mixing apples and oranges along with a few old tires, used vegemite jars and perhaps a few other hoary items- maybe a cane toad even. The following will clarify for you why you should be a bit more concerned about what goes down under into your inards.

"At the heart of the intense debate over bishpenol A is that it challenges the main tenet of modern toxicology, the idea that the dose makes the poison, a principle credited to the 15th century Swiss alchemist Teheophrastus Paracelsus.

Under this principle, a two-pack-a-day smoker is more at risk of cancer than a one-pack-a-day user, and the belief that rising doses make a substance more dangerous is the basis of all government regulations that seek to set safe exposures for harmful
chemicals.

It seems obvious that high dose of a poison would be more dangerous than a lower one, but bisphenol A is creating a stir because it doesn't follow this seemingly comon-sense rule. Researchers say this oddity results from the fact that bisphenol A isn't a conventional harmful agent, such as cigarette smoke, but behaves in the uncoventional way typical of hormones, where even vanishingly small exposures can be harmful.

This is why some environmentalists and scientists contend that bisphenol A, which leaches in trace amounts from food and beverage packaging, is among the scariest
manufactured substances in use, an eerie modern version of the vaunted lead water pipes by which ancient Romans were unknowingly poisioned.

Extrapolating from the results of animal experiments, they suspect bisphenol A has its fingerprints all over the unexplained human health trends emerging in recent decades hinting at something going haywire with sex hormones, including the early onset of puberty, declining sperm counts, and huge increase in breast and prostate cancer, among other ailments.

Although it has been known, since a search for estrogenic drugs in the 1930s, to act like a sex hormone, bisphenol A has recently emerged as one extremely odd compound,perhaps the most unusual in widespread use. Research has found tht it seems to turn modern toxicology on its head by being more dangerous at very low exposures than at high ones, a finding that is focusing attention on the possible health
repercussions of the relatively small amounts leaching from consumer products."

Canadian government scientists have classified bisphenol A as "inherently toxic" and Environment Canada and Health Canada have launched a new assessment of the material and companies making it will be challenged by the assessment to prove that continue use is safe.

CRUZE: ppb - the above should illustrate that your premise is flawed - ppb is a big thing.

Amazingly, an inspection of a typical Aussie MEGA shampoo bottle of the type favored by a certain species of S. Queen'sland climbing vixens indicates that the container is a #2 plastic. Gnarly behavior and extreme use of canines cannot therefore be attributed to the effects of BPA and hormonal morphing as a consequence of multiple daily shampooing events. The research continues.

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