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Wednesday, April 28, 2010

Chemicals and impotence

One of the better short stories dealing with alien invasions is The Screwfly Solution, written under a pseudonym by Alice Sheldon. It assumes aliens would find it too much trouble to use military force to wipe us off the face of the Earth. They would prefer to let us die out. Curiously, this builds on and anticipates many of our own uses of chemicals that induce impotence or infertility. Without any help from aliens, humans are doing their best to reduce their own numbers. One of the most common of the modern chemicals is Bisphenol A (BPA) which is used to harden plastic products and make epoxy resin. You will find it in hundreds of different types of container used to store or carry food. It's also used to coat the inside of drinks cans and to harden the plastics used in the manufacture of sports equipment, cars and some medical devices. In other words, it's hard to avoid eating food stored in it and touching things made with it.

There's now a small mountain of evidence out of China that workers exposed to high levels of BPA suffer loss of libido, erectile dysfunction and impotence. This adds to all the other evidence of health problems now being considered by the FDA including behavioural changes, early onset of puberty in girls, obesity and cancer. Next year, it's due to announce whether the use of BPA is to be limited in the US. The FDA already accepts that babies and children are potentially most at risk - a fact disputed by the manufacturers. Indeed, in many countries, baby bottles made with BPA have been banned. This latest evidence out of China is clear evidence of reproductive problems in adults. But, before panicking, we need to see the Chinese evidence in context. All these workers were exposed to significantly higher levels of BPA than would be encountered in the real world. No matter how many cans of soda and beer you drank, you would not consume the same amount of BPA. Nevertheless, BPA does leach into food and drink from its packaging. In November, Consumer Reports published the result of tests showing BPA in the majority of the brand-name canned foods on sale in US stores. This included juice, soups, vegetables and fish. According to industry experts, the evidence to date is no more than suggestive of a link between BPA and impotence. We will have to wait for the FDA to complete its review for the government's view.

Until then, men should seriously consider avoiding the use of anything made with BPA, and stop eating and drinking out of cans. You should consider switching to bottled beer. This is the precautionary principle. You avoid the potential danger until you have clear evidence it is safe. Once you have reduced your intake of BPA, this should reduce the risk of erectile dysfunction. If you do have problems, use cialis - now the leading brand in many countries. This comes in two different versions. One giving you thirty-six hours of sexual response, taken as needed. The other taken once-daily gives response round the clock. There is no better drug on the market for giving completely natural and hard erections whenever you are sexually stimulated. Buy cialis and find out why it has become the top brand.

2 comments:

C. Ialis said...

The study was designed to investigate the efficacy of treating the adult male rats with royal jelly (1g/kg B. Wt. orally) for one month with or without hydrogen peroxide (0.5%) in drinking water on sexual efficiency, glutathione and malondialdehyde tissue testis levels.The current study demonstrated that male rats receiving hydrogen peroxide caused a significant decrease (P<0.05) in the sperm count, percentage of live sperm and glutathione level, accompanied with a significant increase (P<0.05) in the malondialdehyde level and percentage of abnormal sperm deformity compared with control group. No significant difference was found in the weight of testis, epididymus, prostate, seminal vesicles, testosterone hormone level and body weight compared with control group.The treatment of adult male rats with royal jelly concomitantly with hydrogen peroxide caused a significant increase (P<0.05) in testicular weight and the body of epididymus, sperm count, testosterone hormone and glutathione level, and decrease in sperm deformity percentage, while no significant differences in the prostate weight, seminal vesicles, the percentage of live sperm, malondialdehyde level and body weight compared with hydrogen peroxide group.The treatment of adult male rats with royal jelly alone produced a significant increase (P<0.05) in the weights of testis and body of epididymus, sperm count, testosterone hormone, the percentage of live sperm, and glutathione level and retuned to control value, accompanied with a significant decrease (P<0.05) in malondialdehyde level and the percentage of sperm abnormality.

L. Ovex said...

“In 1619, male and female far servants (karler and piger) in Denmark who were dissatisfied with their wages or terms of employment could immediately be put into irons and sent to a public works or to a spin-house. Stavnsband, a compuslsory residence system for males aged between 18 and 36 (intended to secure the supply of soldiers and labour force), was extended in 1742 to cover peasant boys from eight years up, and two decades later the lower age limit fell further to four years.” [Centuries of child labour: European experiences from the seventeenth to the twentieth century, 55]We forget how often our nineteen century ‘thinkers’ lived in the aftermath of the hot breath of the ancien regime, which had burned their parents and grandparents. This was especially the case with Soren Kierkegaard, who carried within him the anguish of his father, Michael – or rather, Michael as the boy Soren never knew, one of the karler, a shepherd boy who cried out in the harsh night and loneliness of the Jutland plain.The divide between Western Europe and Eastern Europe in the 18th century was deepened by the fact that in the East, serfdom was strengthened, and continued to be the dominant mode of production for the agricultural sector, while in the West, serfdom was more and more reduced to a series of symbols, which were themselves under attack. Denmark stands out in this picture because – though by position and by its bourgeoisie – it should have been a western nation, its serf system kept getting harsher. Nearly destroyed in 1660 when the Swedes overwhelmingly defeated the Danish armies, Denmark reconstructed itself on the bones of aristocratic power. The king, siding with Copenhagen’s Bürger, took on ‘absolute’ powers and – as was the 18th century pattern – gradually commodified space and labor.

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