D.T.
Hi A.,
I went through the same stage (researching BPA) and ended up only using Nuby brand (no BPA) and not feeding Grace anything out of plastic (we only use glass baby food jars etc. I wouldn't worry that you've caused your baby harm... and for your own peace of mind, you may want to switch the bottles she uses, not use plastic baby food containers, and keep an eye out for #7 plastics elsewhere.
The following are three websites and one blog which discuss the possible dangers of BPA... the second article below is dated August 2, 2007, so this is making it back into the mainstream news again as more scientific evidence emerges about how the stuff leaches into the food or liquid.
Like I said earlier, to be on the safe side, we are using glass and trying to avoid #7 plastics all together. We ended up throwing away the baby food that's in the plastic containers and bought glass.
Here are the 3 websites with the information about BPA. I hope this helps:
Bisphenol A: Toxic Plastics Chemical in Canned Food: Consumer tips to avoid BPA exposure
Although completely eliminating exposure to BPA may not be possible, there are steps you can take to reduce your family's exposure to this chemical.
Studies show canned foods are a predominant source of daily BPA exposure in our lives. Food and drink cans are lined with a BPA-containing plastic. Beverages appear to contain less BPA residues, while canned pasta and soups contain the highest levels. EWG found that the worst foods tested put pregnant women and formula-fed infants within an unacceptable margin of safety to levels that cause harmful effects in laboratory animals. Typical exposures are within a 10 to 100-fold range of the effects that cause harm in a laboratory setting. More typical 'safe levels' are 1000 to 3000 times lower than toxic doses to animals.
Liquid infant formula: Two of five concentrated (liquid) infant formulas tested had detectable levels of BPA. Due to the special vulnerabilities of children to environmental contaminants, you might consider using powdered formulas if your infant tolerates them. Powdered formulas have not been tested for BPA in the US, although there is less likelihood that they are in contact with BPA-containing plastics.
Certain plastics are made from BPA which leaches at low levels into food or liquids. Leaching from plastics appears to happen at a much lower level than found in canned foods. Nevertheless it is good to take simple precautions.
Polycarbonate plastics: BPA is found in polycarbonate plastic food containers often marked on the bottom with the recycling label #7. Not all #7 labeled products are polycarbonate but this is a reasonable guideline for a category of plastics to avoid. Rigid and transparent plastic containers for food and drink, such as widely used clear Nalgene bottles and toddler sip cups contain BPA. Some polycarbonate water bottles are marketed as 'non-leaching' for minimizing plastic taste or odor, however there is still a possibility that trace amounts of BPA will migrate from these containers, particularly if heated or otherwise abraded or abused.
Safer products and uses: When possible it is best to avoid #7 plastics, especially for children's use. Try looking for alternatives to BPA products such as those listed in the text box below from the Institute For Agriculture Trade and Food Policy (IATP 2006). Plastics with the recycling labels #1, #2 and #4 on the bottom are safer choices and do not contain BPA. Find baby bottles in glass versions, or those made from the safer plastics polypropylene and polyethylene. Pliable milk colored plastic does not contain BPA. Bottles used to pump and store expressed breast milk by the brand Medela are also labeled BPA-free.
Many metal water bottles are lined with a plastic coating that contains BPA. Look for stainless steel bottles, such as those sold by Real Wear and Kleen Kanteen that do not have a plastic liner.
While the levels of BPA that leach from hard plastics is generally low, we recommend avoiding use of plastic containers to heat food in microwaves. Ceramic, glass, and other microwaveable dishware are good alternatives. Avoid using old and scratched plastic bottles.
Some plastic wraps contain BPA, though some brands such as Saran™ promise to be BPA free.
Scientists issue warning about chemical in plastic
By Marla Cone, Times Staff Writer
6:49 PM PDT, August 2, 2007
http://www.latimes.com/news/nationworld/nation/la-na-pl...
In an unusual effort targeting a single chemical, several dozen scientists on Thursday issued a strongly worded consensus statement warning that an estrogen-like compound in plastic is likely to be causing an array of serious reproductive disorders in people.
The compound, bisphenol A or BPA, is one of the highest-volume chemicals in the world and has found its way into the bodies of most human beings.
Used to make hard plastic, BPA can seep from beverage containers and other materials. It is used in all polycarbonate plastic baby bottles, as well as other rigid plastic items, including large water cooler containers, sports bottles and microwave oven dishes, along with canned food liners and some dental sealants for children.
The scientists -- including four from federal health agencies -- reviewed about 700 studies before concluding that people are exposed to levels of the chemical exceeding those that harm lab animals. Infants and fetuses are most vulnerable, they said.
The statement, published online by the journal Reproductive Toxicology, was accompanied by a new study by researchers from the National Institutes of Health finding uterine damage in newborn animals exposed to BPA. That damage is a possible predictor of reproductive diseases in women, including fibroids, endometriosis, cystic ovaries and cancers. It is the first time BPA has been linked to female reproductive tract disorders, although earlier studies have found early-stage prostate and breast cancer and decreased sperm counts in animals exposed to low doses.
BPA Investigation
June 30, 2007
It is likely that very few people have heard of the chemical, bisphenol A (BPA). The plastics that we use each day are wreaking havoc on our bodies and immune systems.
Fortunately, a flurry of recent research and the actions of certain progressive local governments are beginning to draw attention to the dangers of bisphenol A, a key component of plastics used in infant feeding bottles, refillable plastic water bottles, beverage cans, and countless other containers used for food and beverages destined for human consumption everywhere.
The extent of damage caused by only nominal exposure to this ubiquitous chemical is dramatic, and ranges from prostate cancer, to growth of breasts in men, diabetes, immune system damage, and numerous others. In fact, studies on laboratory mice demonstrated that at nominal levels, BPA can cause damage both to the unborn fetus and to adults. The list is shocking:
* Enlarged prostates
* Genital deformities
* Disrupted puberty
* Increased cancer rates in certain organs and cell lines
* Pancreatic changes that promote insulin resistance
* Pubescent mammary gland developmental changes
* Altered to thyroid regulation
* Structural damage to the brain
* Hyperactivity
* Abnormal sexual behavior
* Increased fat formation
* Down's syndrome
* Disrupted reproductive cycles
An April, 2007 paper, "Bisphenol A induces permanent squamous change in mouse prostatic epithelium." by Yuji Ogura, and Kenichiro Ishii et. al. report:
Results indicate that in mouse, BPA can directly elicit CK10 expression in prostatic epithelium, and that this change can be elicited by doses as low as 20 mug/kg/day. We speculate that low-dose BPA during fetal life may also induce permanent squamous change in human prostate.
Bisphenol A's connection to diabetes is explored in depth on the website, Our Stolen Future,devoted to the health of future generations.
In their report, "The Estrogenic Effect of Bisphenol-A Disrupts the Pancreatic ß-Cell Function in vivo and Induces Insulin Resistance," published in Environmental Health Perspectives," the website's authors describe an important study by Alonso-Magdalena, P, S Morimoto, C Ripoll, E Fuentes and A Nadal completed in 2006, where they
"...demonstrate that low-level, chronic exposure to bisphenol A (BPA) induces insulin resistance in adult mice. Their work provides the first experimental link between endocrine disruption and diabetes.
The doses they used in these experiments were within the range of current human exposure, 5000 times below the dose identifed by the US EPA as the lowest level causing effects."
In another report by Toyoko Hiroi and Kazushi Okada et. al. of the Department of Chemical Biology, Osaka City University Medical School, in Japan, they summarize the damaging effects of this commonly found chemical ingredient in plastics that millions use.
BPA and its derivatives are common pollutants of rivers, lakes, and seawater, resulting in chronic exposure of humans and wildlife to BPA.
In fact, BPA has been detected in the sera and placentas of pregnant women as well as in amniotic fluid. High concentrations of BPA (30 µg/ml; 131 µM) also have been detected in saliva after dental treatment (7). BPA is considered to be one of the most widespread endocrine-disrupting chemicals (EDCs), and recently, its adverse effects on human health and wildlife are being increasingly recognized.
Mounting evidence from numerous studies of BPA reveals that BPA has diverse influences on various physiological functions related to steroid hormones, thyroid hormones, the nervous system, the immune system, and other cell signaling pathways. For example, BPA possesses estrogenic and antiandrogenic activities in vitro, and influences reproductive functions, sexual differentiation, and behavioral patterns in vivo. BPA is also demonstrated to ... cause up-regulation of immune responses, especially T helper 1 responses in adulthood.
Research comparing purported HIV antigen reactivity and protein expression as well as pathogenic reactions common to HIV and bisphenol A reveals important linkages.
The antigen expressed at 53 kilodaltons, known as the protein p53 is attributed to HIV-2. Interestingly, this is protein is common to bisphenol A in mammalian antigenic response.
"The purified fraction eluted from BPA-Sepharose affinity resin showed a single protein band on SDS-PAGE analysis (Fig. 3A, lane 5). The molecular mass of this protein was calculated to be 53 kDa on an SDS-PAGE gel."
Products to Avoid
The website Sixwise advises:
If you want to avoid products with BPA, keep in mind the following:
* Plastic that contains BPA carries the #7 recycling symbol.
* Most clear plastic baby bottles and child cups are made of BPA-containing plastic.
* Dental sealant may leach BPA; this is being debated. You may want to avoid dental sealants on your children's baby teeth.
You can minimize your BPA exposure by:
* Replacing plastic food and drink containers and utensils with glass, ceramic or metal varieties.
* Purchasing glass baby bottles.
* Using baby bottles and sippy cups made of polyethylene plastic (#1, #2, #4 recycling symbols) or polypropylene (#5) (these are usually colored, not clear, and should still not be heated).
* Not using canned foods or foods wrapped in plastic.
* Not letting children put plastic toys in their mouths.
* Being careful with BPA-containing plastics, if you choose to use them. This means not exposing them to heat (microwave, dishwasher) or harsh detergents (bleach, etc.) and not letting food or beverages sit in the containers for too long.
Scientists issue warning about chemical in plastic
http://reddit.com/info/2clob/comments
natch 6 points 9 days ago
Supposedly the danger is limited to just one certain kind of plastic. Avoid plastics stamped with the number 7 inside the recycling triangle. (Obviously, if there is no recycling triangle, you're on your own). Some large water dispenser jugs use this plastic. Most small bottles that I've checked use number 1, and are safe at least from a BPA standpoint. Disclaimer: I learned this by reading media articles... so take it with a grain of salt.
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nicxvan 3 points 8 days ago
I'm studying to be a plastics engineer at UMass Lowell. I would say that what you said is accurate, mainly stay away from the nalgene indestructible water bottles, especially if they have been washed. The soap can actually breakdown the plastic and release the bisphenol A. The number seven on the bottom is a good way to make sure. another thing to look for is the PC on the bottom.
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spatterlight 2 points 8 days ago
this page has some good info about alternate types of water bottles. Both of mine are #7... I'm going to get one of these Sigg bottles probably, they look pretty slick.
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BeZany 3 points 8 days ago
Thanks for the info. My sister is always talking about this, but when I went to find something other than plastic to store my food in, I only found plastic. I could not even find a glass container to store water. Plastic is everywhere.
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elquesogrande 26 points 9 days ago*
I dug into the BPA issue 6 months back just before my son was born. The issue around BPA is a bit startling and a handful of issues like girls developing earlier, increases in cancer rate and an increase in diabetes for the US point "directionally" towards BPA.
BPA alarm bells have gone off since the early 1900's. The biggest problem is that BPA works as an estrogen mimic. This means that polycarbonate plastic bottles and canned food/drink liners, the majority of which contain BPA, have a % chance of leeching estrogen mimicing chemicals into your (and your baby's) food supply. The highest concentrations of BPA occur while heating polycarbonate bottles - much like what many parents do when heating bottled milk in the microwave. We chose to go with glass bottles due to this issue and to cut back a bit on canned foods for the kids.
I worked for 10 years in the chemical industry and know what 'spins' are put on products like this. Unrefutable proof around BPA causing is a bit tough to find, but who needs proof when your own kids are involved...
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oberon 1 point 8 days ago
As I was reading this I found myself wondering what the alternatives were. As I look around and think about the items I use in my daily life (and I don't even have kids yet), most of them are plastic. My sister has a baby and a huge amount of the baby-centric items she has (bottles, diapers, formula containers - no I did not ask why she doesn't breast feed - the car seat, etc.) are plastic. Obviously people have raised babies for millenia without plastic, and using glass bottles is an obvious option, but what about the other things?
Maybe I should just buy a cabin somewhere in northern Minnesota and become a hermit.
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p3on 5 points 9 days ago
Plastic industry spin in 3..2..1..
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urusai 12 points 9 days ago
Hey, this guy Dr. Cletus from Louisiana Swamp University sez that all chemicals in plastic are not only healthy, they promote penis growth and make you more attractive to strippers! So if only 99% of scientists agree, then it isn't a decided issue, so we should keep on buying delicious and nutritious plastics.
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ba3boos -8 points 9 days ago [comment score below threshold] show comment
eh...let me guess: it causes cancer? what doesn't these days
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MarkByers 8 points 9 days ago
And what's wrong with cancer? A study recently showed that people who don't get cancer have an increased risk of dying of something else.
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Greengages 2 points 9 days ago
Obeying the government obviously.
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nerox3 9 points 9 days ago
"...and that many [of the scientists] have conflicts of interest because they have either studied BPA and reported effects or "have already taken a very clear advocacy position."
So if you are an expert on BPA or have an opinion on BPA we are to ignore your position because you have a clear conflict of interest. “That’s some catch, that Catch-22,”