Tag: ethylmercury

What Level of Mercury Is Considered Toxic?

Why would an Arizona State Representative be posting about mercury and flu shots?

It’s easy to figure out once you look at the rest of her posts…

What Level of Mercury Is Considered Toxic?

We should start off by correcting a few things in Representative Kelly Townsend’s post.

The mercury in a thimerosal containing flu vaccine is ethylmercury, not methylmercury, the type that we might be exposed to in a can of tuna.

And mercury is only considered to be toxic if you are exposed in specific ways, at specific levels, and depending on the length of exposure.

“In case reports of accidental high-dose exposures in humans to thimerosal or ethylmercury toxicity was demonstrated only at exposures that were 100 or 1000 times that found in vaccines.”

FDA on Thimerosal in Vaccines Questions and Answers

Not only is the ethylmercury in vaccines not toxic, since only a small percentage of flu vaccines now contain thimerosal and you almost have to go out of your way to get a vaccine with thimerosal, you have to wonder why Representative Kelly Townsend is posting about it?!?

If she is really concerned about mercury toxicity, she should be sure that the EPA is truly doing everything they can to reduce mercury pollution and our exposure to mercury. She shouldn’t be scaring folks away from vacinating and protecting their kids.

Still, I guess it is much better than some of her other recent anti-vaccine posts, like the one that is said to have compared mandatory vaccinations to forced number tattoos

More on Toxic Levels of Mercury

Why Is a Toxicologist Making Claims About Vaccines and Autism?

It will never end, will it?

Both toxicologist and research should be in quote marks…

Vaccines are very clearly not associated with autism, but that doesn’t seem to keep us from getting new anti-vaccine heroes popping up now and then with new theories from their “research.”

Is it different this time?

Unlike most of the other anti-vaccine experts who are practicing way out of their field of expertise when they talk about vaccines, Ashley Everly is a toxicologist, so is actually an expert on vaccines, right?

“Most toxicologists begin by working at the bench, conducting experiments on in vitro and animal models. Over time, as they gain experience, they may move up to supervise others. While a master’s degree is sufficient for applied research positions, a Ph.D. degree with postdoctoral experience is required for the highest levels.”

Toxicology Overview

Ashley Everly does not have a master’s degree and has not published any research about vaccines. Her opinions are not those of a toxicologist, but of a mother who thinks that her child was injured by vaccines.

Her Facebook copypasta post, while posted as a toxicologist, should remind you of just one very important fact. The great majority of working toxicologists do not share her opinions about vaccines.

“Vaccines are among the most efficacious and cost-effective prevention tools… Parents of children with non-medical exemptions to immunization requirements have been documented to have perceptions of lower susceptibility to and severity of vaccine preventable diseases and perceptions of lower safety and efficacy of vaccines compared to parents of vaccinated children. Moreover, compared to parents of vaccinated children, vaccine hesitant parents had less trust in the government and the health care system.”

Scientific Liaison Coalition (SLC) Epidemiology of Vaccine Refusal webinar

What is the Scientific Liaison Coalition (SLC)?

It is a group of eight toxicology organizations that “increase awareness of toxicology and related sciences on human health,” including the:

  • American Academy of Clinical Toxicology (AACT)
  • American College of Toxicology (ACT)
  • Environmental Mutagenesis and Genomics Society (EMGS)
  • Safety Pharmacology Society (SPS)
  • Society for Risk Analysis (SRA)
  • Society of Toxicologic Pathology (STP)
  • Society of Toxicology (SOT)
  • Teratology Society (Teratology)
  • Union of Toxicology (IUTOX)

And not surprisingly, they teach folks that vaccines are safe, effective, and necessary.

Some of these folks are also the ones doing research on new vaccines.

But, of course, they do a lot more.

The Society of Toxicology wants everyone to know that they are working to help reduce our exposure to potential environmental sources of methylmercury.

“Toxicologists have played a major role in identifying the health risks associated with exposure to methylmercury.”

Society of Toxicology on Mercury : A Long-Appreciated Hazard

What don’t they scare folks about? Thimerosal and ethymercury in vaccines!

“Recent research has confirmed that the ethylmercury component found in Thimerosal is less hazardous than methylmercury. These are different compounds and should not be considered as equivalent neurotoxins. Experimental conditions can be created that result in neurological cell dysfunction. However, current literature supports the contention that childhood vaccinations do not deliver a sufficient dose to produce these neurological injuries.

American College of Medical Toxicology on the IOM Report on Thimerosal and Autism

Neither does the American College of Medical Toxicology.

Maybe that’s why Ashley Everly and other anti-vaccine folks have moved on to MTHFR, glyphosate, aborted fetal cell DNA, and aluminum

More on Toxicologists and Vaccine Safety

Which Vaccines Contain Heavy Metals?

Are you worried about heavy metals in vaccines?

Which Vaccines Contain Heavy Metals?

Multi-dose vials of flu vaccine clearly still contain the preservative thimerosal.
Multi-dose vials of flu vaccine clearly still contain the preservative thimerosal.

Believe it or not, your kids aren’t going to be exposed to any heavy metals when they get their routine vaccines.

The closest that they might come would be getting a flu vaccine with thimerosal, as mercury is indeed a heavy metal and thimerosal breaks down to ethylmercury. But then, the great majority of flu vaccines are now thimerosal-free, so they probably won’t.

Even if they did, it is important to note that thimerosal was removed from vaccines as a precaution, not because it was toxic.

What about aluminum?

It is no secret that many vaccines contain aluminum.

“Aluminum is a heavy metal with known neurotoxic effects on human and animal nervous systems. It can be found in the following childhood vaccines – DTaP, Pediarix (DTaP-Hepatitis B-Polio combination), Pentacel (DTaP-HIB-Polio combination), Hepatitis A, Hepatitis B, Haemophilus influenzae B (HIB), Human Papilloma Virus (HPV), and Pneumococcal vaccines.”

NVIC on  Aluminum and Vaccine Ingredients: What Do We Know? What Don’t We Know?

Do you know what we know about aluminum?

It isn’t a heavy metal.

Heavy metals include copper, gold, iron, lead, mercury, platinum, plutonium, silver, tin, and zinc.

Aluminum is classified as a light metal. Other light metals are calcium, magnesium, potassium, and sodium.

I guess that it makes aluminum sound scarier if you say it is a heavy metal though…

It also make it sound scary if you imply that the aluminum salts in vaccines are neurotoxic. They aren’t.

But what about the idea that vaccines are contaminated with heavy metals?

“Metals including toxic lead contaminate virtually all aluminum adjuvants, a widely-used ingredient of human and animal vaccines, according to a recent study published in the leading journal of the vaccine industry.”

CMSRI on Lead, Iron, Chromium and Other Metals Routinely Contaminate Vaccine Adjuvants, Industry Study Reports

While that was the CMSRI takeaway from the study, Influence of elemental impurities in aluminum hydroxide adjuvant on the stability of inactivated Japanese Encephalitis vaccine, IXIARO, if you actually read it, you find that they found that “all aluminum hydroxide lots examined in this study met” safety guidelines from European agencies (Ph. Eur. 2.4.8) and the United States Pharmacopoeia (USP 231).

And many folks think that a study ‘finding’ contamination by a few Italian scientists, New Quality-Control Investigations on Vaccines: Micro- and Nanocontamination, actually found “that vaccines are incredibly pure.”

Vaccines are safe and necessary.

Don’t let folks scare you from vaccinating and protecting your kids by making you think they contain heavy metals or anything other “toxin.”

What to Know About Heavy Metals in Vaccines

Vaccines do not contain any toxic heavy metals.

More on Heavy Metals in Vaccines

Why Does the FDA Warn About Mercury in Fish, but Not Mercury in Flu Shots?

The FDA and EPA began to warn certain high risk groups about eating fish that might be contaminated with high levels of mercury in 2004.

Although it was known that “nearly all fish and shellfish contain traces of mercury,” this wasn’t thought to be a health concern for most people. Higher levels of mercury in certain fish could be though, especially for young children, nursing mothers, pregnant women, and women who might become pregnant.

That’s why the EPA and FDA recommended that those high risk groups not eat Shark, Swordfish, King Mackerel, or Tilefish (have highest levels of mercury) and limit eating other fish that are lower in mercury.

Why Does the FDA Warn About Mercury in Fish, but Not Mercury in Flu Shots?

So why do experts warn about mercury in fish, but don’t warn about mercury in vaccines?

Trace Amounts on “Ten Lies” Told About Mercury in Vaccines
Trace Amounts thinks that they have uncovered “Ten Lies” about mercury in vaccines

While that is a good question, the most obvious answer is that there are a very limited number of vaccines that you can get that contain any mercury (thimerosal), while if there was no warning, you could theoretically eat a ton of fish that are contaminated with at least some mercury.

And since 2001, thimerosal-free versions of non-flu vaccines have been available. There has also been an increasingly large supply of thimerosal-free flu vaccines available since 2003.

So how much mercury from vaccines could pregnant women and young children really be getting?

Remember, the only routine vaccines that pregnant women get are Tdap (never contained thimerosal) and the flu vaccine. And all of the routine vaccines young children receive are now thimerosal-free, including DTaP, Hib, IPV, Rotavirus, and Prevnar. All children should also get a flu vaccine once they are six months old, but like the flu vaccines for pregnant women, thimerosal-free flu vaccines are available.

Still, if they didn’t get a thimerosal-free flu shot, it would mean that they got the amount of mercury from one flu shot each year, or 25mcg. Some children could get up to 50mcg if it was their first season getting a flu vaccine, as they might need two doses of the flu vaccine.

The FDA and EPA offer very specific recommendations on how much fish to eat to avoid mercury.
The FDA and EPA offer very specific recommendations on how much fish to eat to avoid mercury.

How much mercury do you ingest when you eat fish? It depends on the fish, which is why the recommendations on which fish to eat and avoid are so specific. In general, it can range from 4mcg for salmon, 60mcg for canned albacore tuna and 170 mcg for swordfish.

While you are supposed to avoid the fish with the highest mercury levels, you might be eating the other fish each week, so unless you don’t like to eat fish, it is almost certainly going to quickly add up to much more than you get from your yearly flu vaccine, which you likely avoided anyway by getting a thimerosal-free flu shot.

And with fish, the mercury is in the form of methymercury, 95% of which is absorbed into your bloodstream. In contrast, thimerosal in vaccines breaks down to ethylmercury and is eliminated from your body quicker than methylmercury.

But if fish contains mercury, why not just tell people to avoid eating fish?

“Most fish are an excellent source of high quality protein. Fish are also important sources of selenium, zinc, iodine, iron, and other minerals needed by the body. Fish are natural sources of many B vitamins, and oily fish provide vitamins A and D. Studies with pregnant women have found that the nutritional benefits of fish, like other protein-rich foods, are important for their children’s growth and development during pregnancy and childhood. Most fish are low in fat, and most of the fat that is present in fish is healthy polyunsaturated fat. The polyunsaturated omega-3 fatty acids eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) are also present in many types of fish. Research is still underway to determine the health benefits of omega-3 fatty acids.”

Questions & Answers from the FDA/EPA Advice on What Pregnant Women and Parents Should Know about Eating Fish

Fish have a lot of important nutrients, so are good to eat. So you balance the benefits of eating fish with the risks of mercury contamination and we get the sensible advice to limit the amount of fish you eat.

When you do the same kind of analysis of the risks and benefits of vaccines, even those with thimerosal, the benefits are still greatly in favor of getting vaccinated to prevent life-threatening infections. Remember, thimerosal was removed from vaccines as a precautionary measure and not because it was proven to be dangerous. In fact, many studies have shown that thimerosal in vaccines is not harmful.

What to Know About Mercury in Fish and Vaccines

Comparing mercury in fish and vaccines is like comparing conventionally grown apples and pears, at least it would be if someone figured out how to make an edible vaccine in the form of a pear.

More on Mercury in Fish and Vaccines