Prenatal Acetaminophen Exposure Linked with Autism Spectrum Disorders


Your doctor may have recommended you take acetaminophen during pregnancy.

Your doctor may have recommended you give acetaminophen to your infant after vaccination or to bring down a fever.

Acetaminophen, the main ingredient in Tylenol, is one of the most commonly used over-the counter pharmaceuticals in America. It is used to relieve fever, pain, and other symptoms.

But new peer-reviewed science suggests these standard obstetric and pediatric recommendations may be causing harm.

This study, “Acetaminophen use in pregnancy and neurodevelopment: attention function and autism spectrum symptoms,” was published in the International Journal of Epidemiology in June 2016. It explores the link between acetaminophen exposure to the fetus and autism spectrum disorders (ASD) and Attention Deficit Hyperactivity Disorder (ADHD).

This Spanish study may be the nail in the coffin for the use of this drug as at least two other large-scale Scandinavian studies have also shown acetaminophen has negative effects on the developing fetus.

Developing babies at higher risk from toxic exposure

When an egg is fertilized, a single cell produces the vast complexity of tissues and organs that become a baby. This process is highly susceptible to dangerous environmental toxins, which we doctors call teratogens, and which can cause miscarriage or significant congenital defects.

During the mid-twentieth century, a surge in birth defects resulting in missing limbs was directly related to the anti-nausea drug, thalidomide. Though thalidomide was never approved for use in the United States, another drug—diethylstilbestrol—was. Doctors told women this synthetic hormone was “safe during pregnancy” and obstetricians prescribed it to prevent miscarriage. Some doctors even prescribed it to make a healthy pregnancy healthier. Devastatingly, we learned later that children whose mothers took DES were later succumbing to aggressive vaginal, cervical, and testicular cancers once they hit their teens.

With the rise in environmental pollution and unsafe pharmaceuticals, the rise in congenital defects and neurological issues to children has also risen, as Dr. Philip Landrigan, M.D., notes in his work. It’s imperative to the health of our children that expectant parents understand and avoid any possible sources of teratogens.

Acetaminophen strongly linked to autism

In this new Spanish study, a team of researchers investigated the effects of acetaminophen exposure on fetuses for a period of five years. The study included 2,644 mother-child pairs, of whom 40% indicated using acetaminophen during their pregnancy.

Although the authors were limited by the memory of the mother’s on their acetaminophen consumption, particularly the amounts and frequency consumed, researchers discovered a dose dependent relationship between the amount of acetaminophen consumed and the onset of ASD and ADHD in children whose parents used acetaminophen.

It should be noted that the authors hired a psychiatrist to diagnose and evaluate each child in the study, taking in consideration the varieties of ADHD and ASD that may exist. This is crucial since many studies previously relied on questionnaires from the subjects and didn’t evaluate the variety of ASD and ADHD symptoms in the patients. At the same time, as the researchers noted, genetic variability and other possible confounding variables from other environmental sources were not investigated. Yet, the study did eliminate a large source of potential confounding from socioeconomic status in the population study. In general, the study showed that acetaminophen has a strong link to contributing to the onset of ASD and ADHD in children.

Pregnant? Throw your Tylenol in the trash

I tell the expectant families in my integrative pediatric practice that pharmaceuticals should be avoided as much as possible during pregnancy. Why? Because too many studies show that even very small amounts of ingested pharmaceuticals can pass to the developing fetus. The mother and baby are intimately connected during this period and great care must be taken to protect the fetus from potential hazards. Many, if not most, pharmaceuticals recommended by doctors or touted as safe during pregnancy have not actually been studied on fetuses or children (because it is considered medically unethical to conduct tests on pregnant women). These drugs must be treated with caution.

A colleague at Duke University’s Medical School, Dr. William Parker, Ph.D., who is an expert in immunology, has been conducting an exhaustive review of the scientific literature on acetaminophen. His best recommendation is to keep it far away from pregnant women and far away from children.

We still have much to learn in the medical community on the brain and the influence of drug’s on its complex circuitry but we have enough information now to say definitely that we must avoid acetaminophen during pregnancy and infancy.

Want to read more about tossing the Tylenol?

A helpful article on safer alternatives by Dr. Aviva Romm, M.D.
A helpful article on acetaminophen and autism by Dr. Jennifer Margulis, Ph.D.
A helpful article on immune disruption and acetaminophen-induced neurodevelopmental disorder by Dr. William Parker, Ph.D.

Jonathan Kopel, an M.D./Ph.D. candidate at Texas Tech University Health Sciences Center, contributed to this article.

PaulThomasDr. Paul Thomas, M.D., is a Dartmouth-trained pediatrician and a specialist in addiction medicine. He has over 13,000 children in his practice and over 196,000 subscribers on YouTube. His new book, The Vaccine-Friendly Plan, gives parents the information they need to help their children avoid toxins.



Dr. Paul has a great new book, “The Vaccine Friendly Plan, Dr/ Paul’s Safe and Book CoverEffective Approach to Immunity and Health- from Pregnancy Through Your Child’s Teen Years.” You can get your copy today here…

You can also follow Dr. Paul at the following social media sites!
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 Dr Paul

What’s really causing microcephaly in Brazil? It might not be the Zika virus after all


In late December the Brazilian government took the unusual and unprecedented step of warning Brazilian women of childbearing age not to get pregnant.

Other countries, including El Salvador, quickly followed suit. Days later, America’s Centers for Disease Control and Prevention issued a travel warning to pregnant women, urging them to avoid visiting 14 countries in total.

Why all the worry?

Because health officials noticed an alarming spike in babies born with unusually small heads, a condition called microcephaly.

When a new, devastating, and unexplained medical condition suddenly appears in large numbers like the microcephaly cases in Brazil, the first question any thinking person should ask is why?

The answer we’ve been given is Zika, a mosquito-borne viral infection that usually causes nothing more than mild self-resolving symptoms, including a rash and low-grade fever.

The reason that Zika is a possible suspect is because six infants (yes, only six) out of 270 confirmed cases of babies with microcephaly and brain damage were found to have Zika.

“Some babies with microcephaly have been reported among mothers who were infected with Zika virus while pregnant,” the CDC explains. “Researchers are studying the possible link between Zika virus infection and microcephaly.”

It is possible that Zika is causing microcephaly, but the evidence suggests that it is highly unlikely. If Zika is actually implicated in these microcephaly cases, its presence is only part of the story. A benign viral infection does not suddenly become virulent with no other explanation.

So if it’s not the Zika virus, what is it?

What’s causing the sharp increase in brain damaged newborns in Brazil?

At this point it is anybody’s guess.

But I have my suspicions.

One theory that you may have read about in the alternative media is that the microcephaly is linked to pertussis vaccination. Starting in 2014, about ten months before microcephaly hit the headlines, Brazil began an aggressive health campaign to vaccinate every pregnant woman against pertussis, urging women to get the Tdap vaccine. Not only does this vaccine contain a large amount of aluminum, which is a known neurotoxin.  The FDA clearly states that injected aluminum has been shown to cause cause central nervous system damage if injected into infants at doses higher than 4 to 5 micrograms [a microgram is one millionth of a gram] per kilogram of weight per day. If that weren’t enough to give any thinking person pause about the risk to the unborn child of injecting aluminum into the mom, the safety of giving Tdap has never been tested on pregnant women.

While poisoning the unborn child with aluminum is unconscionable, in the United States we have been vaccinating pregnant women against pertussis since 2013 and have not seen a corresponding spike in severe microcephaly cases, so aluminum in vaccines alone is probably not the culprit.

I’ve started to wonder if perhaps the aluminum in the Tdap vaccine plus exposure to other environmental toxins—the mercury-based preservative thimerosal (still found in multi-dose flu vaccines in the United States and in vaccines used globally) and/or pesticides—could be causing so much immune system damage that a harmless virus like Zika becomes a trigger for microcephaly and brain damage?

A group of doctors in Argentina have just publicly announced that they believe the epidemic of microcephaly in Brazil is being caused by exposure to a chemical larvicide, Pyriproxyfen, which was injected in Brazil’s water supply in 2014 to kill mosquito larvae.

Microcephaly occurs in about 2 – 12 babies out of 10,000 in the Uniited States (source). Severe microcephaly, like that being seen in Brazil, was virtually unheard of until this past December.

When I was training to be a doctor in the 1980s we saw cases of severe microcephaly, cased by congenital rubella syndrome, CRS. Babies with CRS usually have eye problems, heart issues, and devastating neurological issues. I held a newborn in my arms who had a severely deformed and tiny head, CRS. Congenital rubella is a condition that can occur when a woman gets rubella while pregnant, especially if the infection occurs in early pregnancy.

Congenital rubella can also occur when a newly pregnant woman or a woman about to get pregnant is given the measles, mumps, and rubella vaccine (MMR). The CDC warns that the MMR vaccine, “should not be administered to women known to be pregnant. Because a risk to the fetus from administration of these live virus vaccines cannot be excluded for theoretical reasons, women should be counseled to avoid becoming pregnant for 28 days after vaccination with measles or mumps vaccines or MMR or other rubella-containing vaccines” (Source).

There was a catch-up MMR vaccine program in some of the areas of Brazil where they are seeing high numbers of infants with microcephaly (Source in Portuguese). Women of childbearing age were given this vaccine. Perhaps it is the MMR vaccine, not the Zika virus, that is the real culprit?

My solution to stop microcephaly:

Stop the Tdap vaccination of pregnant women: the risks of this vaccine to a developing fetus outweigh the benefits.

Stop giving the MMR to women of childbearing age: this triple-live-virus vaccine is known to cause microcephaly and may be the real cause of the Brazilian epidemic.

Stop spraying toxic chemicals on plants and in the water: pesticides and other toxins in the environment are a known cause of birth defects, including brain damage.

Severe microcephaly epidemic? Over!

It’s important not to jump to conclusions. It’s important to keep an open mind. But I call on government officials in Brazil and the World Health Organization, as well as independent scientists, health researchers, and concerned doctors, to investigate whether three vaccines—MMR, Tdap, influenza—given just before or during pregnancy (especially in the first trimester when the developing fetus is most vulnerable), in combination with other toxic exposures, are the cause of microcephaly in Brazil.

So what’s actually happening on the ground?

Pharmaceutical companies and biotech firms are in a fast and furious race to develop another vaccine … against the Zika virus.

Dr. Paul


PaulThomasDr. Paul Thomas, M.D. is an award-winning Dartmouth-trained pediatrician with nearly 30 years of experience in pediatrics. His practice, Integrative Pediatrics, serves some 11,000 children in Portland, Oregon. He is the co-author, with Jennifer Margulis, Ph.D., of the forthcoming book, The Vaccine-Friendly Plan: Dr. Paul’s Safe and Effective Approach to Immunity and Health—from Pregnancy through Your Child’s Teen Years (Ballantine 2016). Follow Dr. Paul on Facebook and watch his videos on YouTube, where he has over 87,000 subscribers.

February 17th is Vaccine Exclusion Day at Oregon Schools- Did You Know That You Can Still Get Non-Medical Exemptions? – Learn how

Feb17February 17th. is Vaccine Exclusion Day at Oregon Schools.

In 2015, I testified at the Oregon Senate health committee against SB442 that was going to get rid of the ability for parents to get a philosophical or non-medical exemption to vaccines. That bill was dropped, so we have preserved parent’s rights in Oregon to selectively vaccinate or not to vaccinate.  Medical freedom still exists in Oregon. If you ask most doctors and most school officials, you will not hear this truth.  They will tell you your child needs all the “required” vaccines or they will be excluded from school on February 17th. 2016.

The State vaccine program has been sending out warning letters to parents whose children are not fully vaccinated that these children will not be able to attend school starting February 17th. Sadly, they do not inform parents of their right to watch a state produced educational video and then print off their certificate so the schools will allow their child to attend school.

As a result of the passage of SB895 last year, students in public and private schools and certified child care facilities who had a non-medical (religious or philosophical) vaccine exemption in place before March 1, 2014 need to obtain a new non-medical exemption by next Wednesday, February 17.

You can watch the Vaccine Education Module here:

You will have to sit there and click through the slides of the video. The length of the video depends on how many vaccines your are opting out of, and takes anywhere from 10 minutes for a single vaccine, to about an hour for all of them. Be sure your computer is attached to a printer at the time you watch this and print off several certificates, at least one for each child and an extra one for you to keep in your records. When you give this document to your school or daycare, you will also need to fill out, and sign the state certificate of immunization status:  that the schools typically provide.

Most of my patients have done lots of vaccines, just not all of them.  Fill in those that you have done.  Sign it. Turn in your certificate and wish them a good day. No, your doctor does not need to sign this form.

If your school is giving you any trouble, send them to the State web site on this topic:

They can Google search “Oregon non-medical exemptions” and it comes right up!

If all this fails perhaps a visit from an attorney to level harassment charges might be the last resort.

Medical freedom and informed consent must be our guide, not misinformed schools and physicians who don’t even know the law or the rules. I’m being nice when I say they don’t know the laws and the rules.  Perhaps they are being dishonest and manipulative.  I’d like to think not.


Dr. Paul.

PaulThomasDr. Paul Thomas, M.D. is an award-winning Dartmouth-trained pediatrician with nearly 30 years of experience in pediatrics. In addition to being board certified in Pediatrics, he is an expert on addiction and board certified in Addiction Medicine. His practice, Integrative Pediatrics, serves some 11,000 children in Portland, Oregon. He is the co-author of the forthcoming book, The Vaccine-Friendly Plan: Dr. Paul’s Safe and Effective Approach to Immunity and Health—from Pregnancy through Your Child’s Teen Years (Ballantine 2016).

Oregon vaccine exclusion day coming February 17th- Know your rights!

vaccine3Oregon is still one of the few States that allows a parent to make informed decisions about each vaccine being proposed by the CDC schedule and the Oregon Department of Health. Having informed consent means that after you have reviewed the pros and the cons with your child’s doctor, you can decide whether or not you want to give that vaccine. If you are not allowed to make this choice, we have slipped into a police state status where the government tells you what medical procedures will be done on your child regardless of your thought or choices.  Thankfully, Oregonians have said no to such an approach and have maintained a path to medical freedom. You can vaccinate as you feel is best for your child and your child does not need to be excluded as the schools and the State letters that have arrived in your mailboxes would imply.

To get your exemption watch the online video and print off your certificate immediately after watching it. Also, keep a copy for yourself, just in case it goes “missing”. The video can be found here:


Sign the Certificate of Immunization Status:

Turn in the certificate your printed after watching the video, and the certificate of immunization Status – and maintain your dignity.

If you are my patient and have taken the above steps but are still facing any challenges at a school, please let me know.  Call my office.

Medical Freedom!


Dr. Paul

PaulThomasDr. Paul Thomas, M.D. is an award-winning Dartmouth-trained pediatrician with nearly 30 years of experience in pediatrics. In addition to being board certified in Pediatrics, he is an expert on addiction and board certified in Addiction Medicine. His practice, Integrative Pediatrics, serves some 11,000 children in Portland, Oregon. He is the co-author of the forthcoming book, The Vaccine-Friendly Plan: Dr. Paul’s Safe and Effective Approach to Immunity and Health—from Pregnancy through Your Child’s Teen Years (Ballantine 2016).