摘自英文维基百科<a href='http://en.wikipedia.org/wiki/
nalgene' target='_blank'>Nalgene条目</a>：<br /><br />
ossible health risks<br /><br />In recent years, numerous studies [2] have suggested that polycarbonate plastics such as the ones used by Nalgene may leach estrogen analogs into heated or acidic liquids, although Nalgene denies this. It is important to note that estrogen analogs are not, in fact, estrogen, as many have come to believe. Among the secreted chemicals, Bisphenol A is most responsible for the reaction with estrogen. Other research has found that fixatives in polycarbonate plastics can cause chromosomal error in cell division called aneuploidy.<br /><br />BPA Defined Bisphenol-A (BPA) is an industrial chemical used in the manufacture of epoxy resins and polycarbonate plastic, a lightweight and extremely du
rable material. Examples of the numerous consumer products that are made entirely or in part of polycarbonate include CD cases, computers, safety glasses, cell phones and a variety of food contact products such as baby bottles, water bottles and food storage containers.<br /><br />Safety Polycarbonate plastic has been authorized for use in food and beverage contact appli
CATions by government agencies worldwide, and safely used for more than 50 years. During that time, polycarbonate and BPA have been extensively studied and tested for health and safety by both manufacturers and government agencies. The Food and Drug Administration; The Environmental Protection Agency; The European Commission Scientific Committee on Food; the German Federal Institute for Risk Assessment; the Japan Ministry of Health, Labor and Welfare and other researchers around the world have studied the safety of BPA and polycarbonate for approximately 40 of the 50 years in which BPA has been used as an industrial “ingredient.” Findings of all major studies indicate that the quantity of BPA required to manufacture food and beverage containers does not pose any health risk to humans.<br /><br />Significant Studies Supporting the Safety of BPA• Research Triangle Institute (now RTI International), under the sponsorship of a plastics industry consortium, exposed rats to low doses of BPA and found no evidence of health or reproductive effects over three generations. 2001 • Chemical Compound Safety Research Institute for the Japanese National Institute of Health Sciences exposed rats to low doses of BPA and found no health or reproductive effects over two generations. 2001 • National Toxicology Program, co-sponsored by the U.S. EPA and NIEHS, confirmed “the inability of other credible studies in several different laboratories to observe low-dose effects of BPA, and the consistency of these negative studies [showing no health or reproductive effects from low-dose exposure].” 2001 • U.S. EPA confirmed conclusions that low-dose effects of BPA were not demonstrated. 2002 • Comprehensive risk assessment on BPA by the European Commission and reviewed by the EU’s Scientific Committee on Toxicity, Ecotoxicity and the Environment (CSTEE) found that “there is no convincing evidence that low doses of bisphenol-A have effects on developmental parameters in offspring.” 2002 • Japanese Ministry of Economy, Trade and Industry concluded there is no need for regulatory action. 2002 • Scientific panel convened by the Harvard Center for Risk Analysis found “no consistent affirmative evidence of lowdose BPA effects for any endpoint.” 2004<br /><br />An alternative is available in the polyethylene versions of these products (made out of HDPE, Nalgene's traditional material), which are free of these chemicals. They can be identified by their greater flexibility, their translucent, "milky" appearance, and by the number 2 triangular plastic recycling symbol on the bottom.<br /><br />谁翻译一下啊
