The chemical Bisphenol-A, or BPA, is found in some plastic food packaging and the inside of most tin-cans.
(Photo courtesy of the National Cancer Institute)
The government missed a deadline to
declare whether a chemical in food
packaging is safe. Shawn Allee reports critics are growing
tired of the delay:
Transcript
The government missed a deadline to
declare whether a chemical in food
packaging is safe. Shawn Allee reports critics are growing
tired of the delay:
The chemical is Bisphenol-A, or BPA. It’s found in some plastic food packaging and the inside of most tin-cans.
The US Food and Drug Administration is reviewing whether BPA causes developmental diseases and some cancers. The agency missed a deadline of November 30th, and some groups are getting impatient.
Sarah Jennsen is with the Natural Resources Defense Council. She says while the Food and Drug Administration deliberates, more studies are coming out against BPA.
“We’ve had studies now published that show toddlers exposed to BPA behave diffrently from toddlers who are not exposed, and so this human research which is being published is very concerning because it’s replicating what we’ve already seen in the animal studies.
The Food and Drug Administration won’t say which studies it’s including in its scientific review of BPA or when it will finish.
The researcher plans to follow the children to see if the aggressive behavior is lasting.
(Photo courtesy of the National Cancer Institute)
A study has found links between a chemical used in some plastics and aggressive behavior in girls. Lester Graham reports on the latest research on BPA:
Transcript
A study has found links between a chemical used in some plastics and aggressive behavior in girls. Lester Graham reports on the latest research on BPA:
BPA, Bisphenol-A, is used in a lot of plastic products including plastic dental fillings, carbon-less paper receipts and most canned food linings.
Researchers tested 249 pregnant women for their exposure to BPA and then followed-up after they gave birth.
Joe Braun is one of the researchers at the University of North Carolina-Chapel Hill. Braun says the mothers were given a lengthy questionnaire on the children’s behavior when they turned two.
“And what we found is that the exposure to BPA, or bisphenol-A, in pregnancy was associated with behaviors like aggression or hyperactivity. And this association was strongest in girls and we really didn’t even observe an association in boys.”
The study was published in the journal Environmental Health Perspectives.
Braun says they’ll continue to follow the children to see if the aggressive behavior is lasting.
Tomatoes are posing a problem for a BPA-free lining - they are so acidic they can eat through it (Photo by Scott Bauer, courtesy of the USDA)
More than a hundred studies have linked a chemical in plastic to health problems. Things like breast cancer, prostate cancer, diabetes, and early puberty. This chemical, bisphenol-A or BPA, is used to coat the inside of baby formula cans and almost all food and soda cans. Rebecca Williams visits one company that’s found a safer can:
Transcript
More than a hundred studies have linked a chemical in plastic to health problems. Things like breast cancer, prostate cancer, diabetes, and early puberty. This chemical, bisphenol-A or BPA, is used to coat the inside of baby formula cans and almost all food and soda cans. Rebecca Williams visits one company that’s found a safer can:
(sound of forklift backing up, pumpkin seeds pouring out of roaster)
It’s pumpkin seed roasting day at Eden Foods. It’s a natural foods company based in Michigan. It sells things like rice, canned beans, and all kinds of packaged fruits and sauces.
Michael Potter is the company’s president. More than a decade ago, he came across some news reports out of Europe.
“And I learned all the can linings in the USA were lined with this lining that leaches BPA into foods from the can.”
That got him thinking, and researching. Then he started badgering his can manufacturers.
“We virtually begged them to provide us an alternative. We persisted in hounding them and eventually the Ball Corporation said they’d make a can with an old lining they used to make.”
The lining’s made from a plant resin instead of the epoxy resin with BPA. The thing was, it would cost Eden Foods 14 percent more – that’s about 2 cents a can.
But Michael Potter says he had to make the switch.
“We’re selling this not only to people that we don’t know, in the market, we’re feeding it to our children, our grandchildren and ourselves – we didn’t want to eat bisphenol A.”
But there was one problem. He couldn’t make the switch for canned tomatoes.
Tomatoes are acidic, and they can eat through the plant resin can lining. That could lead to bacteria or rust getting into the food.
“There is no alternative for high acid foods other than bisphenol-A lining at this point. We are urging, nudging, demanding a bisphenol-A free alternative. And we’re optimistic we’ll end up with one.”
But the metal can industry says those alternatives just don’t exist right now.
John Rost is with the North American Metal Packaging Alliance. He says the industry is trying to find new materials. But he says shoppers shouldn’t worry about eating canned food.
“The levels of BPA that are coming from epoxy can linings are exceedingly low. We’re talking low parts per billion. That level has been deemed safe by the European Food Safety Authority, Health Canada and the US FDA.”
That’s true, but Health Canada has declared BPA toxic. It’s making moves to limit its use.
A number of independent scientists debate that there’s any safe level of BPA.
Maricel Maffini studies BPA at Tufts University School of Medicine. She says they’ve seen harmful effects on lab animals at the same very low levels of BPA that are leaching into our food from cans.
She says that’s because BPA acts like the hormone estrogen.
“You just need a tiny little signal to trigger an effect. So I think it’s unfair to say there is a safe dose because as scientists we cannot say that yet. We have not found a dose that is low enough where we don’t see effects.”
She says babies and kids are the most at risk. She says BPA has caused lasting damage in lab animals when the animals were exposed to the chemical both before and after birth.
“I think we should be concerned, I think we should limit our consumption of canned foods especially if you are pregnant or if you have babies.”
It’s possible that US can makers will be forced to stop using BPA. Leaders in Congress have introduced bills that could soon ban BPA in all food and beverage containers.
BPA is not only found in plastic bottles, it is also found in the lining of most canned foods (Photo by Ken Hammond, courtesy of the USDA)
A chemical found in plastic might be present in people’s bodies more than previously thought. A number of previous studies suggest that even at very low levels bisphenol-A, or BPA, could be linked to health problems. They range from prostate and breast cancer to early puberty in kids. Rebecca Williams reports:
Transcript
A chemical found in plastic might be present in people’s bodies more than previously thought. A number of previous studies suggest that even at very low levels bisphenol-A, or BPA, could be linked to health problems. They range from prostate and breast cancer to early puberty in kids. Rebecca Williams reports:
Scientists thought our main exposure to BPA was through food because of plastic linings in cans and other containers. They also thought BPA didn’t stay in our bodies very long.
But in this new study, researchers found that people who fasted for 24 hours still had levels of BPA close to the same as people who’d just eaten.
So they think we might be exposed to BPA some other way. Maybe water – some plastic water pipes contain BPA. Or, BPA is staying in our bodies for longer than people thought. Or both.
Dr. Rick Stahlhut is the lead author of the study in Environmental Health Perspectives. He says there are some ways to reduce your exposure from food.
“You’d probably have to get food that was mostly fresh and cook it yourself and try not to use polycarbonate plastic to store food.”
And he says use containers and bottles that don’t contain BPA.
Environmental activists are calling for
food packagers to stop using a toxic plastic to
line food and beverage cans. Lester Graham reports:
Transcript
Environmental activists are calling for
food packagers to stop using a toxic plastic to
line food and beverage cans. Lester Graham reports:
The thin plastic lining used in many canned foods and soft drinks contains a chemical
called bisphenol-A.
Canada is taking steps to restrict the use of the plastic in baby
bottles and formula can linings. In the U.S., some retailers have removed some
products using plastic with bisphenol-A.
Aaron Freeman is with the Environmental Defense Fund in Canada. He says this
chemical has been linked to too many health problems to ignore.
“Things like breast cancer, prostate cancer, early puberty in girls, attention deficit
disorder, and so on – those are all health effects we’re seeing sharp rises on.”
Freeman concedes cans lined with plastic containing bisphenol-A have not been proven
to cause the diseases. But he says since the canning industry has other plastics it can
use, it’s just a sensible precaution to stop using plastic with bisphenol-A.
For The Environment Report, this is Lester Graham.
Clear, colored plastic bottles - such as this one - are made of plastic number 7, which contains BPA (Photo by Rebecca Williams)
Recently there’s been a big concern about
bisphenol-A, or BPA, in some plastics.
Some plastic baby bottles and some water bottles have
been pulled from the shelf by retailers. Grist is an
online environmental news outlet. The journalists
at Grist have been looking at the BPA issue for a few
years. We got a chance to talk with Sarah Burkhalter
at Grist about BPA and why it’s suddenly
in the news:
Transcript
Recently there’s been a big concern about bisphenol-A, or BPA, in some plastics. Some plastic baby bottles
and some water bottles have been pulled from the shelf by retailers. Grist is an online environmental news
outlet. The journalists at Grist have been looking at the BPA issue for a few years. We got a chance to talk
with Sarah Burkhalter at Grist about BPA and why it’s suddenly in the news:
Sarah Burkhalter: “BPA has been in our bottles for a long time, and there have just been some
more high-profile studies in the last year. Back in February 2007, the National Institutes of Health
came out with a report saying that there was a link to BPA and health problems. Even at that point,
people were switching over to glass baby bottles and things like that. But just in the same week,
there was another National Institutes of Health high-profile report, just a few days separate from
when Health Canada – the Canadian Health Department – also expressed concern. So, I just think
it was in the news, and people are suddenly realizing that this is a problem.”
Lester Graham: “So, it was a one-two hit in the media, plus when you mention baby bottles, or
possibly the liners of formula cans, that gets people a little nervous, if there’s something toxic in
that stuff.”
Burkhalter: “Absolutely. And, the thing with BPA is that it’s an endocrine disrupter, it can mimic
estrogen. And so the plastics industry has been saying, ‘well, we use it in such small amounts, no,
it’s no problem’. Other studies have said that even in very, very small amounts, BPA can sneak in
and change cell structure, and really muck-up the reproductive system. And it’s been linked to
early puberty, and breast cancer, and behavioral disorders, and all kinds of things. So when they
hear about this being in, you know, things that we’re regularly eating and drinking from, they pay
attention.”
Graham: “Now, here’s the big question – we’ve seen retailers pull some bottles off of the shelves,
there’s been this controversy with Nalgene, and now even a lawsuit against Nalgene about their
plastic bottles – what plastic bottles are safe to use, what ones can’t I use, how do I tell the
difference?”
Burkhalter: “well, BPA is found in number 7 plastic – that’s also known as polycarbonate or lexan –
and that’s the clear, hard plastic. So Nalgene bottles – not the white ones – but the brightly
colored, clear ones. Those are number 7. There’s also, as you mentioned, plastic adhesive in
linings of cans, some of those, BPA is also in some dental sealants. But when it comes to bottles,
number 7 is the one you want to watch out for when we’re talking about BPA. Number 3 has its
own problems – that’s PVC or vinyl – that’s another one you want to watch out for. If you gotta use
plastic, you’re gonna want to look for numbers 2, 4, and 5.”
Graham: “So we look for those numbers on the bottom of the bottle?”
Burkhalter: “Yup. Those are, I mean, you know, they’re not on every plastic, but if there is a
number on them, its ‘2, 4, and 5 to stay alive’. It’s the rhyme I just made up.”
The chemical Bisphenol-A, or BPA, is found in some plastic food packaging and the inside of most tin-cans. (Photo courtesy of the National Cancer Institute)
