Sustainable Ideas...

By Susan Seliger

Here’s a BPA update. Just when you though it was safe to drink bottled juice and water and eat canned foods and go to the dentist, a new study from the Sept. 17, 2008 JAMA (the Journal of the American Medical Association) finds that death from heart disease may be another risk to add to the list. That risk list (from BPA found in hard plastic bottles and the lining of most food and beverage cans) already included diabetes, obesity, and hormonal changes that can produce breast and prostate cancer and neurobehavioral changes in infants exposed in the womb.

I know you’re worried about your money and might be thinking that buying organic and focusing on eating local, natural foods is a needless splurge in tough times. But this new study is a serious reminder that going green, especially when it comes to the the foods you eat, is not an indulgence. It will keep you healthy — and alive a little longer.

Here are some answers to your basic BPA questions. See for yourself if the fuss is justified. ANd there’s a useful list of other BPA articles at the end.

WHERE IS BPA FOUND?

BPA (bisphenol-A, an endocrine-disrupting chemical) is used in polycarbonate plastic (such as hard, colored water bottles and 5-gallon bottles used in water coolers) and the lining of most food and beverage cans. BPA can leach from the plastic into foods and liquids – and even more leaches when the container is heated or used and re-used.

BUT DOES IT REALLY GET INTO OUR BODIES?

Short answer: Yes. Nearly everybody in the U.S. seems to have BPA show up in their urine – which means it was in the body. The U.S. Centers for Disease Control found BPA in the bodies of 93 percent of the people they tested.

From the JAMA study:

“Widespread and continuous exposure to BPA, primarily through food but also through drinking water, dental sealants, dermal exposure, and inhalation of household dusts, is evident from the presence of detectable levels of BPA in more than 90% of the US population.”

BUT IS THIS LOW-LEVEL EXPOSURE REALLY DANGEROUS?

Short answer: yes.

Long answer from the JAMA study:

“Evidence of effects in animals has generated concern over low-level chronic exposures in humans…..“Bisphenol A (BPA) is one of the world’s highest production–volume chemicals, with more than 2 million metric tons produced worldwide in 2003 and annual increase in demand of 6% to 10% annually.1 Bisphenol A is used extensively in epoxy resins lining food and beverage containers and as a monomer in polycarbonate plastics in many consumer products. Widespread and continuous exposure to BPA, primarily through food but also through drinking water, dental sealants, dermal exposure, and inhalation of household dusts, is evident from the presence of detectable levels of BPA in more than 90% of the US population.”

“The potential for low-dose effects has added to the controversy about possible hazards and whether currently recommended exposure thresholds require revision.”

CONCLUSION:IS BPA REALLY A HEALTH RISK?

Short answer: Yes — exposure to BPA may lead to death from a variety of diseases – that could have been prevented by reducing exposure.

Long answer from JAMA:

““We found that higher BPA concentrations were associated with diagnoses of cardiovascular disease and diabetes.”

“Higher BPA exposure, reflected in higher urinary concentrations of BPA, may be associated with avoidable morbidity in the community-dwelling adult population.”

“Using data representative of the adult US population, we found that higher urinary concentrations of BPA were associated with an increased prevalence of cardiovascular disease, diabetes, and liver-enzyme abnormalities. These findings add to the evidence suggesting adverse effects of low-dose BPA in animals.”

FOR MORE information on BPA, check out these stories:

JAMA STUDY: Association of Urinary Bisphenol A Concentration With Medical Disorders and Laboratory Abnormalities in Adults

BPA in Dental Plastic: Are the Fillings in your Teeth Dangerous?

BPA: The Dangers of Canned Food May Be Greater Than Plastics

BPA: 5 Tips to Avoid the Dangers in Plastics

Where to Find Baby Bottles Without BPA — and Formula and Pacifiers, Too

Where to Find BPA-Free Baby Bottles and Sippy Cups

BPA: Plastic Products That Are BPA-Free

Where to Find Safe Plastics without BPA Chemicals

Your BPA Questions Answered

Photo credit: Susan Seliger