Exposure to toxic chemical higher than suspectedJune 6th, 2011 - 5:41 pm ICT by IANS
London, June 6 (IANS) Exposure to a so-called ‘gender-bending’ chemical found in plastic bottles and household products is greater than previously thought.
More ‘Bisphenol A’ (BPA) can interfere with the way hormones are processed and so may affect fertility. It is accumulated through diet and is proved to be more dangerous than previous lab tests had shown.
Scientists fear it may mean that humans are at greater risk from the substance, found in the lining of food and drink containers as well as baby bottles and plastic cutlery, reports the journal Environmental Health Perspectives.
Cheryl Rosenfeld, associate professor at the University of Missouri, who carried out the new research, said: “People are primarily and unknowingly exposed to Bisphenol A through the diet because the various plastic and paper containers used to store our food are formulated with BPA.”
“We know that the active form of BPA binds to our steroid receptors, meaning it can affect oestrogen, thyroid and testosterone function. It might also cause genetic mutations,” he said.
Previous research had been based on giving mice a “single exposure” to the chemical, which is widely used to harden plastic products, according to the Telegraph.
But in the new study, the lab animals were given a “steady diet supplemented with BPA throughout the day” in order to mimic the long-term exposure that humans have to it in everyday life.
Researchers found a “significantly greater increase” in the active form of the chemical absorbed and accumulated in the mice which received a steady diet of it, compared with those who received just one dose.
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- Foetal exposure to chemical BPA causes problems in girls - Oct 24, 2011
- Exposure to toxic chemical linked to wheezing in kids - May 02, 2011
- Food packaging harbours harmful toxins - Mar 31, 2011
- Chemical found in plastics 'can increase testosterone levels in men' - Aug 26, 2010
- Exposure to Bisphenol A may cause male impotence - Nov 11, 2009
- High plastic chemical levels in urine ruins males' sex drive - May 28, 2010
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Tags: baby bottles, bpa, drink containers, environmental health perspectives, everyday life, food and drink, genetic mutations, hormones, household products, lab animals, lab tests, paper containers, plastic bottles, previous research, rosenfeld, steady diet, steroid receptors, term exposure, toxic chemical, university of missouri