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Welcome to my blog. The goal of this site is to pretty much have fun while sharing my knowledge of health and financial, physical, spiritual, and environmental wellness. I invite you to make your comments and enjoy the resources you will find here. I don't claim to know it all so I do look forward to learning from you as well.

June 20, 2005

Science Matters: Toxic products add to our chemical burden

by David Suzuki
06.16.05
Politicians often like to talk about the importance of "cleaning up our environment"—especially when they're trying to get elected. But wouldn't it make more sense to avoid messing it up in the first place? Most of us tend to assume that things we put into the environment simply go away. While it's true that nature can absorb much of our wastes, many of our chemical creations don't immediately dissipate harmlessly. In nature, everything is connected; so in many respects, there is no "away." That's why it's so important to be careful about what we release into nature. The problem is, we're much better at creating new chemical compounds than we are at figuring out if they are harmful, and we're even slower to stop using them when they are. Pesticides, for example, continue to cause concern, and two recent studies have linked pesticide exposure to potential health problems. The first looked at almost 3,000 people in five European countries. It found that the more a person is exposed to pesticides, the more likely that person is to develop Parkinson's disease. Amateur gardeners who used pesticides were nine per cent more likely to develop the disease, while farmers who used pesticides regularly saw their risk increase by 43 per cent. Another study had even more disturbing findings. It found that two chemicals used in pesticides and fungicides could cause fertility defects in male rats - defects that were then passed down to all their male offspring, as well as subsequent generations. It's the first time that toxins have ever been found to have this effect. The two compounds tested were methoxychlor, a pesticide used in place of DDT, and vinclozolin, a fungicide commonly used in the wine industry. Researchers at Washington State University injected the toxins into pregnant rats. Male rats born of the subsequent litters showed reduced sperm counts and reduced sperm motility. These defects continued in each generation of their offspring. Researchers caution that the chemical doses given to the rats were much higher than humans ever receive, but the findings raise yet more questions about the effects that widespread use of hormone-like pollutants are having on human health. And these pollutants, often called "endocrine disruptors," aren't just found in pesticides. They are also widely used in plastics to make them hard or, alternatively, soft. Chemicals called phthalates, found in a wide variety of soft plastics, have already been linked to feminization in male animals. And a study to be published in the journal Environmental Health Perspectives has reported that sons born to women exposed to higher levels of phthalates are more likely to exhibit a higher degree of feminization. Finally, another study has found that exposure to the bisphenol A, an oestrogen-mimicking chemical found in hard plastics, may increase the risk of developing breast cancer. The study, conducted on rats, found that exposure to bisphenol A can alter breast development in a way that makes cancer more likely. As the weight of evidence piles up against these chemicals, we have to ask ourselves why are we still using them? Why are pesticides still used for cosmetic purposes in most towns and cities? Why are hormone-mimicking chemicals like phthalates and bisphenol A still allowed in common products like baby toys? Cleaning up our environment after we mess it up is helpful. But it's also terribly expensive and often not very effective. The best thing we can do for our environment, our health and our pocketbooks is to not mess it up in the first place. Because when it comes to our environment, "away" just doesn't exist.


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