Showing posts with label cancer. Show all posts
Showing posts with label cancer. Show all posts

Toxic Teflon


Did you know that Teflon has been linked to cancer and birth defects?


Eight U.S. companies, including giant DuPont Co., agreed on January 25, 2007 to virtually eliminate a harmful chemical used to make Teflon from all consumer products coated with the nonstick material.


Although the chemical would still be used to manufacture Teflon and similar products, processes will be developed to ensure that perfluorooctanoic acid (PFOA) would not be released into the environment from finished products or manufacturing plants.


PFOA -- a key processing agent in making nonstick and stain-resistant materials -- has been linked to cancer and birth defects in animals and is in the blood of 95 percent of Americans, including pregnant women. It has also been found in the blood of marine organisms and Arctic polar bears.


The voluntary pact, which was crafted by the Environmental Protection Agency, will force companies to reduce manufacturing emissions of PFOA by 95 percent by no later than 2010. They will also have to reduce trace amounts of the compound in consumer products by 95 percent during the same period and virtually eliminate them by 2015.


The agreement will dramatically reduce the extent to which PFOA shows up in a wide variety of everyday products, including pizza boxes, nonstick pans and microwave-popcorn bags.


The move, which came just a month after DuPont reached a $16.5 million settlement with EPA over the company's failure to report possible health risks associated with PFOA, drew applause from environmental groups that have frequently criticized both the administration and DuPont.
Scientific studies have not established a link between using products containing trace amounts of PFOA, such as microwave-popcorn bags or nonstick pans, and elevated cancer levels.


Several other companies agreed to reduce public exposure to the chemical, including 3M Co., Ciba and Clariant Corp. But DuPont, which settled a class-action suit accusing it of contaminating drinking water in Ohio and West Virginia communities near its plant in Parkersburg, W.Va., has attracted the most public scrutiny over its PFOA use.


William Bailey III, who was born in 1981 with multiple birth defects while his mother, Sue, was working with the chemical at the Parkersburg plant, said he will "be watching" to see if the chemical giant complies with the new agreement.


"They're trying to save face," said Bailey, who is suing DuPont over his birth defects.


Excerpt from an article written by Juliet Eilperin
Washington Post Staff Writer

Plastic can Release Potentially Harmful Chemicals



I found this on a USDA Fact Sheet:


Containers & Wraps in the Microwave


• Only use cookware that is specially manufactured for use in the microwave oven. Glass, ceramic containers, and all plastics should be labeled for microwave oven use.
• Plastic storage containers such as margarine tubs, take-out containers, whipped topping bowls, and other one-time use containers should not be used in microwave ovens. These containers can warp or melt, possibly causing harmful chemicals to migrate into the food.
• Microwave plastic wraps, wax paper, cooking bags, parchment paper, and white microwave-safe paper towels should be safe to use. Do not let plastic wrap touch foods during microwaving.
• Never use thin plastic storage bags, brown paper or plastic grocery bags, newspapers, or aluminum foil in the microwave oven.



The U.S. Center for the Evaluation of Risks to Human Reproduction (CERHR) had this to say:



Exposing plastic bottles to boiling water can release a potentially harmful chemical 55 times faster than normal.
Bisphenol A (BPA) is found in the plastics that make up water bottles, baby bottles, and other food and drink packaging. It acts as an environmental estrogen and can disrupt the function of the endocrine system.
Exposure to BPA presents some risk to development and reproduction, although it's unclear at what level that harm begins to occur.
"There isn't a real answer," said study senior author Scott Belcher, an associate professor of pharmacology at the University of Cincinnati. "There seems to be a current difference of opinion between the scientific research field and the folks doing risk assessment. If you were to sum it up in an easy, relatively conservative way, the scientific data points to some reason for caution at low concentrations. There really isn't much information regarding the effects on human populations directly."
Belcher's findings appear in the Jan. 30 issue of the journal Toxicology Letters.
Animal experiments have suggested that BPA may mimic the female sex hormone estradiol. The fear has been that exposure to BPA can cause birth defects and developmental problems. In addition, exposure to BPA has been blamed for a variety of other problems, including cancer, diabetes, obesity and attention-deficit disorder.
Exposure to BPA can occur through direct contact or by exposure to food or drink that has been in contact with material containing BPA.
Previous studies had found that repeatedly scrubbing, washing and boiling polycarbonate baby bottles could cause them to release BPA.
Belcher was asked if he used plastics and he said that he avoided them as a personal choice.


Source: Medline Plus