US scientists have found canned green beans contaminated with nearly 730 parts per billion of bisphenol A (BPA), a synthetic hormone and component of epoxy can linings used in packaging.
The study initiated by the federal Food and Drug Administration (FDA) has found that 71 of 78 canned foods tested were tainted with BPA.
In the study, which was published by FDA’s Food Additive Safety in the Journal of Agricultural and Food Chemistry, a single serving of beans with the highest BPA level could result in a dose uncomfortably close to the amount that has caused permanent damage to lab animals.
In FDA’s tests, foods with the highest levels of BPA included green beans, peas, chili and refried beans.
According to analysts, BPA acts like estrogen in the body, can disrupt the hormone system and cause other harmful effects, even at very low doses.
Biomonitoring surveys by the US Centers for Disease Control and Prevention (CDC) indicate that nearly all Americans test positive for BPA.
In 2009, Environmantal Working Group (EWG) tests found BPA in 9 of 10 umbilical cord blood samples, the first detections of the chemical in US newborns.
BPA is commonly found in canned infant formula, hard plastics, cash register receipts and dental fillings