Got kids? A bun in the oven? Maybe you’re thinking about starting a family? Last week the FDA issued two reports that would make any parent or parent-to-be a little bit nervous. I’ll share the good, or somewhat good news first. On June 12, Lauran Neergaard of the Associated Press reported that silver dental fillings containing mercury may be unsafe for pregnant women and young children. According to the A.P. report, the news comes as a victory for anti-mercury activists.
Since attending the Green Our Vaccines Rally led by Jenny McCarthy and Jim Carrey in Washington, D.C., I have been thinking about dangerous vaccinations that are preserved with thimiserol, a mercury based preservative, and a potential cause of autism.
When I learned that the FDA issued the precautionary warning about silver dental fillings containing mercury, I immediately worried about pregnant women with such fillings, who unbeknownst to them, may unknowingly put their unborn child at risk. While the FDA is not recommending that women who plan to have children remove their silver fillings and replace them with a non-toxic substance, Dr. Tom McGuire of the Dental Wellness Institute calls upon potential mothers to take action; explaining the purposes of his Dental Wellness web-site, he writes: “I am writing this primarily for women who are planning to have children. My sincere hope is that it will stimulate those women to seriously consider having these toxic fillings safely removed prior to becoming pregnant.”
Dr. McGuire admits that there is no definitively known cause of autism, however, he points to the growing number of children exposed to mercury in multiple and various doses; for example, children born to mother’s with amalgam silver fillings are exposed to mercury at the moment of conception since mercury has been released from the filling into the mother’s system. According to MAMA, or Moms Against Mercury Amalgams, explains the effects of mercury on a fetus and young infant:
Combining exposure to mercury while in the womb and nursing, a child who then receives a vaccination with the mercury based preservative thimiserol may begin to show symptoms of autism.
Dr. Amy Holmes of MAMA offers the following suggestions to pre-conception mothers or newly pregnant mothers who have silver amalgam fillings:
So, the good news is that the FDA actually agrees that silver amalgam fillings are unsafe for pregnant women and young children. The bad news is that, well, so many women and children have already been exposed to unsafe doses of mercury. Admittedly, “no scientific studies have gone back far enough to consider children’s first exposure to mercury,” as Dr. McGuire of the Dental Wellness Institute points out, however, it is worthwhile to consider how many children and adults may have avoided autism had they not ever been exposed to mercury.
So now for the bad news from the FDA (and good news for plastic lobbyists); The FDA published the following on its web-site regarding Bisphenol-A:
An articled entitled “Why Journalism is Failing the Public on Risks from Plastic” and that rebuts the argument that Bisphenol-A may cause reproductive problems (like miscarriages), birth defects, and cancer, but sites a brief from the U.S. National Toxicology Program that indicates that there is cause for concern when it comes to BPA in plastic:
The “Why Journalism is Failing . . .” article emphasizes that “more research is needed,” however, let’s consider responses to the brief, which the National Institute for Environmental Health Sciences directs us to (and is not included as part of the rebuttal).
A letter from the American Academy of Pediatrics directed at Dr. Barbara Shane at the NTP expresses concern over the U.S. National Toxicology Program’s conclusions; the AAP writes:
The AAP is deeply concerned, however, that the current scientific evidence is largely insufficient to draw accurate conclusions about the safety of exposure to BPA, particularly with respect to vulnerable populations including pregnant women, infants and children . . . it is important that the report not provide potentially false reassurance that there is “negligible concern” in these areas in the face of such large gaps in understanding.
The AAP’s letter goes on from there, and are to be commended for their recommendation that NTP coordinate further research on Bisphenol A with the National Institutes of Health, Food and Drug Administration and the Environmental Protection Agency that addresses “the current shortcomings in BPA data and analysis.”
So, if we listen to the FDA, we can guzzle down water out of our polycarbonate bottles and microwave our BPA containers, because hey, there’s only, according to the NTP, a negligible risk that BPA is harming our reproductive systems and wreaking havoc on our children’s development.
But, if we listen to leading authorities like the American Academy of Pediatrics, the verdict on BPA is not in. More research is needed. But, c’mon, even Walmart is banning BPA. Arggh. It’s like banging my head into a wall.


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OK… here’s the science teacher’s take on the mercury thing. Mercury builds up in your body, especially fatty areas. Will my single amalgam filling make that big of a difference in terms of the total mercury I’ve been exposed to over my lifetime? If I get that single filling replaced now, will it make a significant difference in my mercury levels when I get pregnant, say a year from now? I’d like to see more research done on that. How does the detox thing work? And how quickly? I wonder if the act of removing the filling will realse more of the mercury into your body as opposed to just leaving it there. Let’s just say that I’m not a fan of unnecessary dental work… so I’d hate to get it done if it wouldn’t make a difference.
Also, I wonder if there’s a measurable difference in the mercury levels in breastmilk of mothers with amalgam fillings vs. mothers without. Since breasts are fatty tissue…I’d love to see some research on that.
Oh, sorry, I forgot to mention BPA. What ever happened to playing it safe? There might be a link, so I’ll avoid this chemical. Why should the FDA say there’s not enough evidence, and allow people to continue to be exposed while they gather more evidence? So they don’t get sued? I’ll play it safe, thank you very much.
“This situation is made worse by the fact that the fetus does not have an immune system to protect it.”
I hate fear-mongering and/or plain old fashioned stupidity. An immune system (regardless of whether or not you have one) cannot protect you against mercury exposure–same as it cannot protect you from lead ingestion. If you think it can, I highly suggest you go to your doctor and ask them for a vaccination against mercury… they’ll only look at you like you’ve lost HALF of your brain.
Clearly the moms against mercury amalgams don’t really have a clue what they’re talking about.
Oh, and there are blatant grammatical errors all over that website. Talk about unreliable and shoddy. If you can’t even be bothered to make sure your home page is grammatically correct, then you most certainly cannot be relied upon to provide correct, FACTUAL information elsewhere.
Surely, you can find more productive things to worry about – like obesity, or smoking, or smog? First, there is no thimerosol used in vaccines any more: why in the name of Gaia would you trust the judgment of Jenny McCarthy or Jim Carrey? They have no statistical or scientific training, and based on their statements, they sound as if they have about as much actual scientific knowledge as a medieval peasant. Jenny McCarthy actually complained that vaccines contain dead viruses. For the love of all that’s good, that’s how vaccines are made – that’s why people don’t die of smallpox anymore. As for BPA, the European Union found no risk. The NTP simply said that on the basis of some animal studies, it couldn’t rule out some possible risk. But at the same time, it didn’t say it was “concerned” or “very concerned” – the evidence is hardly strong, and the risk hardly something to lose sleep over. If you actually read how these risk assessments are conducted, instead of listing to the professional worry-worts, you’d sleep a lot better at night, and spend your time doing something more productive that fretting and agonizing during the day.
Mercury exposure to an infant DOES have a greater effect and impact on that child. Not only do infants have what is called an ‘open gut’ that allows nutrients (and metals) to pass freely into circulation, a small amount that may be less harmful to an adult is an extraordinarily large amount to an infant. It’s like putting a drop of food coloring in a gallon of water – it will dissipate and you can barely see the effect. Put the same drop in a cup of water and there is proportionally much more food coloring int eh cup then gallon, although the same amount was added to each.
Who’s trusting the judgment of Jenny McCarthy and Jim Carrey? Follow their research and you’ll find loads of information about mercury in vaccines (and mercury isn’t the only problem), and the amount of stress vaccines put on the immature immune system. Some vaccines have removed the themerisol from the vaccines, but there are still vaccines containing them, and there are still older vaccines containing mercury being administered to children and infants.
As for BPA, the studies are carried out on rats because the effects of substances on rat’s organs is the most reliable comparison we have to the effect of the substances on human organs. This is due to the similarities in the body systems. If you’d like to see more solid research, by all means, find participants willing to be poisoned for a few bucks and conduct the study. It’s not going to happen, and turning your nose up at the current standard for toxicological research, while burying your head in the sand is your choice. Don’t flog those who wisely choose to heed the current research and share the information in an effort to help others.
Oh, and obviously my previous comment is in responce to the ignorant comments posted before.
Jessica – thanks for the info, and your time and work to spread the word.
I’d like to know the scientific background of the folks posting comments. Anyone can be snotty, but what qualifications do they have about the science? I have no problem saying that I have both a B.S. and M.S. in Biology, and my skeptical take comes from someone who understands how the immune system works, as well as the effects of vaccines on the body, both at the cellular level and at the molecular level.
And by the way, the two celebrities are not CONDUCTING the research, they’re just spokespeople who are concerned about a child with autism, getting the word out. And yes, some current vaccines DO contain thimerosol, but you can demand to read the vaccine packaging to be sure.
Finally, I don’t think anyone questions the effects that mercury has on the human body. We know that it’s toxic, and we know that we’re exposed to it from a variety of sources. Why not avoid amalgam fillings and thimerosol in vaccines to help lower the risk?
I’m two classes away from a ACS BS degree (that would be p. chem II if you’re interested, and an instrumental analysis lab). I chose not to finish the degree and transferred to a top art school from the honors college of my previous school after completed the majority of a math and ACS Chemistry degree. Call me a well-rounded slacker, whatever, I still have a solid background in toxicology and biochemistry.
Gee, what about Harper and Butterworth???
It seems that the ladies know their stuff…
Thank you Harper, Trevor, Melody, and Abbie for your comments. The debates regarding the effects of BPA on the human body are ongoing and require more research. In response to MAMA’s grammatical errors, I can only suggest that the argument on their site is worth considering; perhaps MAMA’s budget provides for a grassroots effort than for an operation funded by Washington lobbyists.
So far as the education question goes, I am a self-educated environmentalist with degrees in English, Education, and partially in Linguistics. I don’t have a certificate to prove that I am a good parent, but everyday I try to inform myself about how to raise a healthy child and give back a healthy planet to the generations to come.
Oh, and agonizing over risk assessments (that adversely affect the health of our children) is just part of being a good parent. I don’t spend my days fretting and worrying because I educate myself and my family regarding issues of concern, like mercury in silver fillings and vaccinations and BPA in plastic sippy cups for children.
I just want to say that I’m not trying to discredit anyone based on a degree. I was only trying to make a point that those of us who comment are not always reliable (or polite)! It’s easy to make comments like a know-it-all, without really knowing anything. I think the lack of response says it all.
I am also largely self-educated when it comes to environmental issues as well. Remember (for those of us with an education background) that the intrinsic motivation to learn is what really makes people learn, research, and understand. Thanks Green Mamma for willing to be controversial. In the end, all that matters is the health of your family, and educating yourself about the options you have is the best thing you can do. And thanks for helping the rest of us to educate ourselves as well. :)
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