We have noted before that bisphenol A (BPA) is a key component of the epoxy liner in canned food and drink, so it should really be no surprise that new tests at Health Canada found it in pop cans. The chemical is thought to be an endocrine disruptor or "gender bender", and is now banned in many countries from baby bottles.
The levels in pop cans is low, with the highest level found to be 4.5 parts per trillion; you would have to drink 8,000 cans of pop or 900 cans of energy drinks to get to the daily exposure limit set by Health Canada.
But others say that those exposure limits are thousands of times too high.
It isn't in cans, but it is funny!
Martin Mittelstaedt explains in the Globe and Mail:
Still, many scientists are worried about ingestion of the minute amounts of BPA found leaching from food and beverage packaging. The chemical is a synthetic compound able to fool cells into viewing it as estrogen, providing what amounts to an extra dollop of the female hormone.
Although levels vary, natural estrogen circulates in people at extremely minute concentrations, around a part per trillion. The test results indicated that an average soft drink has concentrations of BPA around half a part per billion, or 500 times more than the level of the female hormone in people.
Dr. vom Saal says there is also a growing body of scientific literature, based on animal experiments, that has found harmful effects due to BPA at concentrations up to 1,000 times below Health Canada's safety limit. These conditions include such hormonally linked illnesses as breast cancer, and Dr. vom Saal called the government's assurances of no harm "simple-minded."
More in the Globe and Mail
More on Bisphenol A in BPA in TreeHugger:
Fast Company on the Real Story Behind Bisphenol A
BPA Update: Canada Declares it Toxic, FDA Chair's Donor was Michigan's "First Polluter"
FDA Chair Studying BPA Took $5 Million Donation From BPA Supporter
Final Report on Bisphenol A: It May Harm Kids
FDA Says BPA Is Safe For Babies
Bisphenol A: How Wal-Mart Became the New FDA
Quotes of the Day: Opinions on the FDA Declaring BPA Safe
Don't Buy A Nalgene Water Bottle Until You Read This
Nalgene Dumps Bisphenol A Like Hot Potato :
Possible Effects of BPA
More Bad News About Bisphenol A: It Interferes with Chemotherapy Treatments
Yet Another Bisphenol A Pile-on: Linked to Heart Disease, Diabetes and Liver Problems
New Study: BPA May Make You Stupid and Depressed
Sources of BPA:
Bisphenol A Is In Your Tomato Sauce
Bisphenol A Could Be In Your Teeth
BPA Danger may be greater from Tin Cans than Water Bottles
Polycarbonate Water bottles
Canada Calls Bisphenol A "Dangerous"
Time to Pack In the Polycarbonates
Bottled Water - Lifting the Lid :
MEC Nixes Nalgenes
On Phthalates in TreeHugger:
Do Babies Exposed to Phthalates Have Smaller Penises?
Congress Will Do USEPA's Job: Reduce Childhood Exposure to Phthalates in Toys
Ask Treehugger: What Is An Endocrine Distruptor?
Are Boys Disappearing Because of Gender Bender Chemicals?