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Friday, June 14th, 2013
The chemical compound bisphenol-a (BPA), which is found in plastics and many food containers, has been linked with childhood obesity in girls, according to a new study published in the journal PLOS ONE. BPA has long been associated with health problems in boys and men, including prostate issues, but this study calls the compound a major environmental culprit in obesity among young girls. More from CNN:
[Dr. De-Kun Li, a reproductive and perinatal epidemiologist at Kaiser Permanente in Oakland, California,] and colleagues studied 1,326 school-age children in Shanghai, China, and measured BPA levels in their urine. In girls ages 9 to 12, higher BPA urine levels were associated with a doubled risk of obesity. And as BPA urine levels increased, so did the girls’ obesity risk – measured using their weight in reference to weight distribution in the population.
But strikingly, only girls in this age group were affected, the research showed. Neither girls outside of the 9-12 age range nor boys experienced a risk of being overweight or obese, even with high levels of BPA in their urine.
“Girls seem to be more sensitive to environmental impact, and we don’t know exactly why,” said Li, the lead study author.
Researchers do know BPA is an endocrine-disrupting chemical. It enters the body and mimics estrogen, the main hormone involved in female development.
When BPA acts like estrogen in young girls, it may accelerate the onset of puberty and cause weight gain – thus earning its “endocrine-disrupting” title.
“It is biologically plausible that BPA interferes with your normal hormone process – then your body gets screwed up,” said Li.
In March, a study reported a link between BPA and childhood asthma, and last year, the FDA banned BPA from all baby bottles and sippy cups.
Image: Overweight girl, via Shutterstock
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Monday, March 4th, 2013
Exposure to the chemical bisphenol A, which is found in some plastics, food cans, and a number of other consumer products, has been linked with a higher risk of childhood asthma, a new study conducted by researchers at the Columbia Center for Children’s Environmental Health has found. More from CNN:
A child’s chances of suffering with asthma were increased if BPA was detected in their urine samples at ages 3, 5 and 7. In addition, when BPA was measured in urine at age 3, the chances of wheezing by ages 5 and 6 were increased. Same thing for 7-year-olds: BPA meant later problems with wheezing.
An exception to the findings occurred among children with BPA measured in their urine at 5 years of age; those children did not have problems with wheezing during follow-ups one or two years later.
“What is important is that we were seeing the association at routine low doses of exposure,” said Dr. Kathleen Donohue, the lead study author.
One anomalous finding in the study, published Friday in the Journal of Allergy and Clinical Immunology: If BPA was detected in a mother’s urine during her third trimester of pregnancy, there was less likelihood that her child would have breathing problems at age five – the opposite of what researchers expected.
Government agencies consider BPA to be a product of concern, but have stopped short of banning it in all consumer products. Last year, the FDA banned BPA from all baby bottles and sippy cups.
Image: Child with asthma, via Shutterstock
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Wednesday, September 19th, 2012
A new study is reporting that bisphenol A (BPA), a chemical found in some plastics and food cans, may, in addition to causing a host of health risks, raise the risks that children will become obese. Though BPA has been removed from many plastic children’s toys, bottles, sippy cups, and food packages, it has not been banned from use.
In a nationally representative study of nearly 3,000 children and teens, researchers found that kids with the highest levels of BPA in their urine were 2.6 times more likely to be obese compared to those with low levels of the chemical. The report was published in the latest issue of the Journal of the American Medical Association.
It’s the latest evidence that obesity might be affected by more than just diet and exercise, said Dr. Leonardo Trasande, a professor of pediatrics and environmental medicine at the New York University School of Medicine.
“Clearly poor diet and lack of physical activity contribute to increased fat mass, but the story doesn’t end there,” he said.
Image: Childhood obesity sign, via Shutterstock
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Wednesday, July 18th, 2012
The chemical compound bisiphenol-A, otherwise known as BPA, can no longer be used to make baby bottles and sippy cups because of health and safety concerns, the Food and Drug Administration has announced. Every major manufacturer of bottles and sippy cups has already stopped using BPA, and parents are familiar with “BPA Free” labels on those and other plastic products.
MSNBC.com reports on the ruling, which was requested by the U.S. chemical industry’s chief association, the American Chemistry Council in October:
The chemical industry’s request may help curb years of negative publicity from consumer groups and head off tougher laws that would ban BPA from other types of packaging because of health worries.
Legislation introduced by some members of Congress would ban BPA nationwide in all canned food, water bottles and food containers. Chemical makers maintain that the plastic-hardening chemical is safe for all food and drink uses.
BPA is found in hundreds of plastic items from water bottles to CDs to dental sealants. Some researchers say ingesting the chemical can interfere with development of the reproductive and nervous systems in babies and young children. They point to dozens of studies showing such an effect from BPA in rodents and other animals.
But the FDA has repeatedly stated that those findings cannot be applied to humans. The federal government is currently spending $30 million on its own studies assessing the chemical’s health effects on humans.
Image: Baby bottle, via Shutterstock.
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Thursday, May 3rd, 2012
Garden hoses, gloves, and even shovels have been found to contain toxic chemicals including lead, phthalates, and bisphenol A or BPA, research from the environmental group HealthyStuff.org has found. Families who spend time in the garden should take note, as these chemicals have been linked to birth defects and hormonal changes after prolonged exposure.
Thirty percent of the 179 garden products tested contained more than 100 parts per million of lead, which is Consumer Product Safety Commission Standard (CPSC) for lead in children’ products. Water sitting outside in a new garden hose for a couple of days was measured with 18 times the allowable lead level.
“Even if you are an organic gardener, doing everything you can to avoid pesticides and fertilizers, you still may be introducing hazardous substances into your soil by using these products,” said Jeff Gearhart, Research Director at the Ecology Center in a press release for HealthyStuff.org. “The good news is that healthier choices are out there. Polyurethane or natural rubber water hoses, and non-PVC tools and work gloves, are all better choices.”
The group urges parents to take the following steps to have a safer garden:
- Read the labels: Avoid hoses with a California Prop 65 warning that says “this product contains a chemical known to the State of California to cause cancer and birth defects and other reproductive harm.” Buy hoses that are “drinking water safe” and “lead-free”.
- Let it run: Always let your hose run for a few seconds before using, since the water that’s been sitting in the hose will have the highest levels of chemicals.
- Avoid the sun: Store your hose in the shade. The heat from the sun can increase the leaching of chemicals from the PVC into the water.
- Don’t drink water from a hose: Unless you know for sure that your hose is drinking water safe, don’t drink from it. Even low levels of lead may cause health problems.
- Buy a PVC-free hose: Polyurethane or natural rubber hoses are better choices.
Image: Garden hose, via Shutterstock.
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