The cause of autism is still unknown, but we are definitely closer to figuring it out. A new study published in the journal PLOS Computational Biology, from researchers at the University of Chicago revealed that autism and intellectual disability (ID) rates are linked with exposure to harmful environmental factors during congenital development.
“Essentially what happens is during pregnancy… there are certain sensitive periods where the fetus is very vulnerable to a range of small molecules – from things like plasticisers, prescription drugs, environmental pesticides and other things. Some of these small molecules essentially alter normal development. Autism appears to be strongly correlated with rate of congenital malformations of the genitals in males across the country, this gives an indicator of environmental load and the effect is surprisingly strong. The strongest predictors for autism were associated with the environment; congenital malformations on the reproductive system in males.” (1) – Andrey Rzhetsky, professor of genetic medicine and human genetics at the University of Chicago
The team analyzed data that covered more than one third of the U.S. population. Data from individual states and more than 2,100 counties were used.
Fetuses, particularly males, are sensitive to multiple toxins such as environmental lead, medications and a wide variety of other synthetic molecules, like pesticides, mercury and more. Exposure to these toxins during critical stages of development is thought to explain a large portion of congenital reproductive malformations.
“It’s really a very significant study, and should trigger the medical community, the scientific community and the government, looking at this especially interesting avenue for the prevention of autism. We know that one of the ways to show that there is a problem with pollution is to show through the presence of these reproductive defects and we know that there is a relationship between the presence of these defects and the presence of autism related disorders” Dr. Harbut, Providence-St John Environmental Medicine Expert
This isn’t the first time that scientists have linked autism to the environment. In 2009, Hertz-Picciotto and Lora Delwiche of the UC Dais Department of Public Health Sciences analyzed 17 years of state data that tracks developmental disabilities.
“It’s time to start looking for the environmental culprits responsible for the remarkable increase in the rate of autism in California.” (2) – Irva Hertz – Picciotto, epidemiology professor at University of California, David
Our environment is full of neurodevelopmental toxins, which means they alter how the brain grows. Mercury, polychlorinated diphenyl, lead, brominated flame retardants and pesticides are a few of many examples. Don’t forget about insecticides and herbicides.
Another recent study published in the New England Journal of Medicinecompared brain autopsies of autistic children who had died from unrelated causes to those of normal ones. The autistic brains demonstrated abnormal patches of disorganized neurons that disrupted the usual distinct layers in the brain’s cortex. The study suggests that abnormalities occurred in utero during key developmental stages between 19 to 30 weeks gestation. It’s not just the toxin, it’s the timing of the exposure as well.(3)
In the United States alone, autism rates have risen from 1:10,000 in 1981 to 1:68 in 2014. Again, multiple studies point to the prevalence of toxins in our environment as the culprit, and there are toxins in many things. No doubt about it, we might not be looking at one cause for autism, but multiple factors associated with how we choose to live our lives on a daily basis.
So, let’s take a look at some of these toxins that could be linked to autism and other neurodevelopmental disorders.
One factor I’d like to touch upon first is the fact that autism rates in Europe have remained pretty steady over the last decade.
This coincides with the fact that in more than 60 countries around the world, including Australia, Japan, and all of the countries in the European Union, there are significant restrictions or complete bans on the production and sale of GMOs and the pesticides that go with them. In the United States, government agencies have approved massive amounts of pesticides, completely ignoring the fact that they are linked to numerous health ailments.
Not long ago, the Environmental Protection Agency (EPA) recently raised the allowable concentrations of Monsanto’s glyphosate, also known as “Roundup” on food crops, edible oils and animal feed. Although we don’t know for sure, it’s important to at least consider the large increase in Genetically Modified Organism (GMOs) and the massive amount of chemicals (pesticides and herbicides) that are dumped on them every year. These pesticides have been linked to numerous health ailments.
A group of scientists put together a comprehensive review of existing data that shows how European regulators have known that Monsanto’s glyphosate causes a number of birth malformations since at least 2002. Regulators misled the public about glyphosate’s safety, and in Germany the Federal Office for Consumer Protection and Food Safety told the European Commission that there was no evidence to suggest that glyphosate causes birth defects.
This study was published by Earth Open Sources, which is an organization that uses open source collaboration to advance sustainable food production. The report was headed by Dr M. Antoniou, Head Gene Expression and Therapy Group, from the Department of Medical and Molecular Genetics at King’s College London School of Medicine, UK. Dr. Antoniou was joined by 6 other doctors who have a similar biography. The report provides a comprehensive review of the peer-reviewed scientific literature documenting the serious health hazards posed by glyphosate and Roundup herbicide formulations. You can read the entire document here.
“Our examination of the evidence leads us to the conclusion that the current approval of glyphosate and Roundup is deeply flawed and unreliable. In this report, we examine the industry studies and regulatory documents that led to the approval of glyphosate. We show that industry and regulators knew as long ago as the 1980s and 1990s that glyphosate causes malformation – but that this information was not made public. We demonstrate how EU regulators reasoned their way from clear evidence of glyphosate’s teratogenicity in industry’s own studies to a conclusion that minimized these findings in the EU Commission’s final review report”
Here is another study that shows Glyphosate can cause abnormalities. It was published in 2010 by the American Chemical Society, the research was conducted at the University of Buenos Aires, Argentina.
“The direct effect of glyphosate on early mechanisms of morphogenesis in vertebrate embryos opens concerns about the clinical findings from human offspring in populations exposed to glyphosate in agricultural fields.”
Another study outlines how glyphosate toxicity leads to suppression of critical enzymes, and as a result links the Western diet to heart disease, Alzheimer, Parkinson, autism and more. (4)
Glyphosate has also been linked to cancer, and various other health ailments. There are numerous studies documenting this and you can find our more information here.
It’s no secret that the brain of an embryo, fetus, or infant is at risk for significant and permanent damage from exposure to chemicals, like pesticides. Not long ago, a study published in the Journal Reproductive Toxicologysuccessfully identified the presence of pesticides – associated with genetically modified foods in maternal, fetal and non-pregnant women’s blood. They also found the presence of Monsanto’s Bt toxin, and warn about toxin exposure during critical stages of development. (5)
The study concluded, apart from pesticides, that Monsanto’s Bt toxins are clearly detectable and appear to cross the placenta to the fetus. Some studies have linked Monsanto’s Bt toxin to cancer, damaging kidney cells, and more, especially when they are combined with Round-up
Multiple studies outline the need for further research when it comes to GMOs before we can say they are 100 % safe for consumption.
“Given the potential toxicity of these environmental pollutants and the fragility of the fetus, more studies are needed, particularly those using the placental transfer approach. Thus, our present results will provide baseline data for future studies exploring a new area of research relating to nutrition, toxicology and reproduction in women. Today, obstetric-gynecological disorders that are associated with environmental chemicals are not known. Thus, knowing the actual concentration of genetically modified foods in humans constitutes a cornerstone in the advancement of research in this area.” (5)
There is more research confirming that mothers who are exposed to commonly used, “safe” pesticides give birth to children with lower intelligence, structural brain abnormalities, behavioral disorders, compromised motor skills, higher rates of brain cancer and small head size. (6)(7)(8)(9)(10)(11)(12)(13)(14)(15)
In Late 2013, the European Food Safety Authority determined that pesticides, like neonicotinamides (linked to killing millions of bees, read more about that here) may negatively affect the development of neurons and brain structures in unborn babies. (16)
These are largely produced by Bayer pharmaceuticals.
“Given the ubiquitous exposure to many environmental toxicants, there needs to be renewed efforts to prevent harm. Such prevention should not await detailed evidence on individual hazards. Toxic exposure to chemical pollutants during these windows of increased susceptibility can cause disease and disability in childhood and across the entire span of human life.”(17) – Worlds foremost pediatricians, toxicologists, environmental scientists and epidemiologists at a conference held in 2007
Scientists at the conference (quote above) emphasized that common exposure to chemicals during critical stages of development of the fetus or newborns increases their chances of contracting diabetes, cancer, thyroid damage and more.
“Chemical pollution represents a serious threat to children, and to Man’s survival.” (18) – The Standing Committee of European Doctors.
Did you know that Americans alone are exposed to approximately 100,000 industrial chemicals? When it comes to babies, all pregnant woman are literally stuffed with hazardous chemicals. One study illustrated the tracking of just 163 chemicals, in which 99 percent of pregnant women tested positive for at least 43 different chemicals. (19)
There has even been significant concentrations of glyphosate found in the urine of people across Europe. A new study from the U.S. Geological Survey, titled “Pesticides in Mississippi Air and Rain: A Comparison Between 1995 and 2007,” reveals that Roundup herbicide (aka glyphosate) and its toxic degradation byproduct AMPA were found in over 75% of the air and rain samples tested from Mississippi in 2007.
The above makes it clear, toxins, especially when fetuses and newborns are exposed to them have the potential to be extremely harmful. So what else are they exposed to at a young age apart from environmental toxins? They are exposed to toxins commonly found in vaccinations.
Let’s be clear, more and more researchers are now considering the fact that toxins at critical stages of development can play a role in autism (as stated and illustrated many times in this article). The vaccine/autism debate has been a controversial one, but for pro-vaccine advocates, saying there is absolutely zero cause for concern is ridiculous. Just because something hasn’t been found, does not mean there is zero cause for concern. So lets look at both sides.
A study published in March of 2013 determined that “Increasing exposure to Antibody-Stimulating Proteins and Polysaccharides (antigens) in Vaccines is Not Associated with Risk of Autism.” You can view that study here.
On the other hand, a study published in the peer-reviewed journal Translational Neurodegeneration provided epidemiological evidence supporting an association between increasing organic-Hg exposure from thimerosal-containing childhood and the risk of ASD diagnosis. You can take a look at that study here.
A paper published in the peer-reviewed International Journal of Environmental Research and Public Health titled Thimerosal Exposure and the Role of Sulfation Chemistry and Thiol Availability in Autism concluded:
“With the rate of children diagnosed with an ASD in the US now exceeding 1 in 50 children and the rate of children with neurodevelopment/behavioral disorders in the US now exceeding 1 in 6 children, and the preceding evidence showing that there is vulnerability to ™ that would not be known without extensive testing, the preponderance of the evidence indicates that ™ should be removed from all vaccines”
The list goes on and on, bottom line, vaccines are full of toxins, and they are administered at critical stages of development, which includes pregnant woman. This study (study linking autism to toxin exposure) further pushes the importance of looking at the multiple vaccines babies are bombarded with at birth, and the toxins found within them.
It also doesn’t help that vaccine manufactures and health authorities have known about and covered up (hidden from parents) dangers associated with vaccinations in order to protect herd immunity. Documents obtained by Lucija Tomljenovic, PhD, from the Neural Dynamics Research Group in the Department of Opthalmology and Visual Sciences at the University of British Columbia reveal that vaccine manufacturers, pharmaceutical companies and health authorities have known about multiple dangers associated with vaccines but chose to withhold them from the public. (20)
At the end of the day, you always have a choice and you shouldn’t make that decision based on fear. Ridding your personal environment from harmful pesticides and toxins does contribute to a healthier environment. From personal experience, living in a virtually chemical free environment for a few years now, the difference felt when stepping into another is overwhelming. It’s amazing how desensitized we’ve become, and how we fail to notice these things on a daily basis.
6.Rauh V, Arunajadai S, Horton M, Perera F, Hoepner L, Barr DB, et al. 2011. Seven-Year Neurodevelopmental Scores and Prenatal Exposure to Chlorpyrifos, a Common Agricultural Pesticide. Environ Health Perspect 119:1196-1201.
- Bouchard M, Chevrier J, Harley K, Kogut K, Vedar M, Calderon N, Trujillo C, Johnson C, Bradman A, Barr D, Eskenazi B. Prenatal Exposure to Organophosphate Pesticides and IQ in 7-Year Old Children. Environmental Health Perspectives, 2011; DOI: 10.1289/ehp.1003185
- Engel S, et al. Prenatal Exposure to Organophosphates, Paraoxonase 1, and Cognitive Development in Childhood. Environmental Health Perspectives, 2011; DOI: 10.1289/ehp.1003183
- Horton M, et al. Impact of Prenatal Exposure to Piperonyl Butoxide and Permethrin on 36-Month Neurodevelopment. Pediatrics 2011; 127:3 e699-e706; doi:10.1542/peds.2010-0133
- Horton M, Kahn L, Perera F, Barr D, Rauh V. Does the home environment and the sex of the child modify the adverse effects of prenatal exposure to chlorpyrifos on child working memory? Neurotoxicology and Teratology, 2012; DOI: 10.1016/j.ntt.2012.07.004
- Rauh V, et al. Brain anomalies in children exposed prenatally to a common organophosphate pesticide. PNAS 2012 109 (20) 7871-7876; published ahead of print April 30, 2012, doi:10.1073/pnas.1203396109
12.Oulhote Y, Bouchard M, Urinary Metabolites of Organophosphate and Pyrethroid Pesticides and Behavioral Problems in Canadian Children Environ Health Perspect; DOI:10.1289/ehp.1306667
13.. Ostrea EM, et al. 2011. Fetal exposure to propoxur and abnormal child neurodevelopment at two years of age. Neurotoxicology.
- Greenop K, Peters S, Bailey H, et al. Exposure to pesticides and the risk of childhood brain tumors. Cancer Causes & Control. April 2013
- Kimura-Kuroda J, Komuta Y, Kuroda Y, Hayashi M, Kawano H (2012) Nicotine-Like Effects of the Neonicotinoid Insecticides Acetamiprid and Imidacloprid on Cerebellar Neurons from Neonatal Rats. PLoS ONE 7(2): e32432. doi:10.1371/journal.pone.003243
(19) Tracey J. Woodruff, Ami R. Zota, Jackie M. Schwartz. Environmental Chemicals in Pregnant Women in the US: NHANES 2003-2004. Environmental Health Perspectives, 2011; DOI: 10.1289/ehp.1002727