Is There a Link Between Tylenol, Acetaminophen or Paracetamol and Autism?
|Assessments & Diagnosis |All About Kids
In September 2025, the Trump Administration in the United States made headlines after publicly suggesting there may be a link between taking Tylenol during pregnancy and autism in children.
Understandably, that created a lot of concern, including here in Australia. Part of that confusion is that the claim didn’t appear out of thin air. There was information floating around for years prior to the headlines (especially) in America. This is a big topic to unpack and for this guide, we fill focus on the latest research and recommendations as outlined by the Australian Therapeutic Goods Administration (TGA).
The strongest evidence we currently have does not show that Tylenol, acetaminophen or paracetamol causes autism. Australia’s Therapeutic Goods Administration responded directly to the US announcement at the time, saying that a causal association had not been established and that several large, reliable studies contradicted the claim.
Better-designed studies, including research that compared siblings within the same family, suggest that genetics, family factors and the underlying reason the medicine was taken may help explain those earlier findings.
A quick note on the names, because this can get confusing too. Tylenol is a US brand name. Acetaminophen is the name commonly used in the United States, while here in Australia we call the same medicine paracetamol. Panadol is one familiar Australian brand.
I can understand why parents are confused. One headline says there may be a link. Another says there is no link. And somewhere in the middle is a mum thinking back to the Panadol she took for a fever during pregnancy and wondering whether she did something wrong.
Based on the evidence we currently have, she should not blame herself.
Key Takeaways
- This conversation surfaced in September 2025 after the Trump Administration in the US publicly suggested a possible link between acetaminophen (paracetamol) use during pregnancy and autism.
- Large studies (linked below) found no evidence of increased autism risk.
- In September 2025, Australia’s TGA said the evidence did not establish that paracetamol use during pregnancy causes autism or ADHD.
- Based on the current evidence, parents should not blame themselves for taking paracetamol appropriately during pregnancy.
What Did the Recent Autism Announcement Say About Tylenol and Acetaminophen?
The recent autism announcement suggested there may be an association between acetaminophen use during pregnancy and autism, but it did not establish that acetaminophen causes autism. An association means two things were observed together. It does not prove that one caused the other.
This is an important distinction because pregnant women generally take paracetamol for a reason. They may have a fever, infection, migraine, pain or another health concern. Researchers then have to work out whether any later developmental outcome is related to the medicine, the illness being treated, genetics or another family factor.
The Australian Therapeutic Goods Administration (TGA) addressed these claims directly. On September 23, 2025, the Australian Chief Medical Officer and the TGA published a Media release titled, ‘Paracetamol use in pregnancy’. It said that robust scientific evidence shows no causal link between paracetamol use during pregnancy and autism or ADHD. It also noted that more recent and reliable studies contradict the claims being circulated.
The TGA is Australia’s national regulatory authority responsible for ensuring the safety, quality, and effectiveness of medicines, medical devices, and other therapeutic goods. They encourage any people who have concerns and are pregnant, or considering pregnancy, to consult with their medical team to discuss this issue.
What Did the 2024 Acetaminophen and Autism Study Find?
A 2024 investigation titled ‘Acetaminophen Use During Pregnancy and Children’s Risk of Autism, ADHD, and Intellectual Disability’, conducted by JAMA, an international peer-reviewed general medical journal, found no association between acetaminophen use during pregnancy and autism when researchers compared siblings from the same families. The study included almost 2.5 million children born in Sweden and is one of the strongest studies available on this question.
In the broader population data, the researchers initially observed small associations between acetaminophen exposure and autism, ADHD and intellectual disability. But when they compared siblings, those associations disappeared.
That sibling comparison is important. Brothers and sisters share many genetic, environmental and family factors. Comparing them helps researchers control for some of the things that can make an ordinary observational study misleading.
For autism, the sibling-controlled result was a hazard ratio of 0.98, with a 95% confidence interval of 0.93 to 1.04. In practical terms, the study found no increased autism risk linked to acetaminophen exposure during pregnancy. The authors concluded that earlier associations may have been due to familial confounding.
What Did the 2026 Acetaminophen and Autism Study Find?
An April 2026 study titled ‘Acetaminophen Exposure During Pregnancy and the Risk of Autism in Offspring’, published in JAMA Pediatrics. In May, 2026, JAMA Pediatrics also shared online under their Medical News in Brief segment, an article titled ‘New Study Finds No Link Between Acetaminophen Use in Pregnancy and Autism’. It stated that there was no evidence found that acetaminophen use during pregnancy increased the likelihood of autism. It examined data from approximately 1.5 million children born in Denmark between 1997 and 2022.
Around 2% of the children exposed to acetaminophen during pregnancy were later diagnosed with autism, compared with around 3% of children who were not exposed. The researchers concluded that the findings did not support a connection between taking paracetamol during pregnancy and an increased autism risk.
That does not mean every research question has been answered forever. It means the newer, larger and better-controlled evidence does not support the claim that paracetamol causes autism.
What Did the Recent Paracetamol and Autism Review Find?
The recent systematic review in The Lancet Obstetrics, Gynaecology, & Women’s Health Journal found no evidence that taking paracetamol during pregnancy increases the risk of autism, ADHD or intellectual disability. A systematic review, like this one titled; ‘Prenatal paracetamol exposure and child neurodevelopment: a systematic review and meta-analysis’ (March 2026), is useful because it looks across multiple studies rather than relying on one result.
As medical practitioners we are taught to look at evidence, and not be seduced by emotion driven headlines. And this is where headlines can be quite unhelpful. “Study finds association” sounds alarming. But the real question is whether the study could separate the medicine from everything else happening during the pregnancy. And often, it could not.
What Does the TGA Say About Paracetamol and Autism?
The TGA says there is no established causal link between paracetamol use during pregnancy and autism or ADHD. It continues to classify paracetamol as a Category A medicine in pregnancy when used according to approved directions.
Category A means the medicine has been used by a large number of pregnant women without any proven increase in fetal malformations or other harmful effects being observed.
The TGA also says that paracetamol remains the recommended treatment option for pain or fever during pregnancy when used as directed. It reminds families that untreated fever and pain can also pose risks during pregnancy, so avoiding treatment altogether is not always the safer choice.
What Does the World Health Organization Say About Acetaminophen and Autism?
The World Health Organization (WHO) released a statement ‘WHO statement on autism-related issues’, on 24 September 2025, saying that there is currently no conclusive scientific evidence confirming a link between acetaminophen use during pregnancy and autism. It also says that “no consistent association has been established”.
WHO, which is the United Nations specialized agency dedicated to global public health, aims to ensure the highest possible level of health for all people worldwide, recommends that pregnant women continue to follow advice from their doctor or healthcare professional and use medicines cautiously and appropriately during pregnancy. So, again, the message is not that medication should be taken casually.
The message is that families should make decisions with their healthcare team rather than from a frightening headline.
Should Pregnant Women Stop Taking Paracetamol Because of Autism Concerns?
Pregnant women should not stop or avoid paracetamol solely because of claims that it causes autism. They should use it as directed and speak with their GP, obstetrician, midwife or pharmacist about their individual circumstances.
The TGA advises that paracetamol is an appropriate treatment for pain and fever during pregnancy. Any medicine should be taken at the recommended dose, for an appropriate reason and for no longer than necessary. A woman with a high fever may be weighing up more than whether to take a tablet. She may also be weighing up the risks of leaving that fever untreated. That is why broad online warnings are not a substitute for individual medical advice.
Did Taking Tylenol, Acetaminophen or Paracetamol Cause My Child’s Autism?
The evidence does not support the conclusion that taking Tylenol, acetaminophen or paracetamol caused your child’s autism. Parents should not blame themselves for using paracetamol appropriately during pregnancy.
We meet so many families, mothers in particular, who blame themselves for their child’s autism diagnosis. Mum’s who reflect back on their pregnancy and wonder ‘did that day I took a Panadol for that splitting headache, cause this?’ We assure you that autism is much more complex than that, and as the evidence suggests, there are no links that prove the connection between the two.
Autism is complex. There is no single established cause, and genetics make a substantial contribution. The current evidence does not justify blaming one medicine or one decision made during pregnancy.
Can Giving Paracetamol to a Baby or Child Cause Autism?
There is no credible evidence showing that correctly dosed paracetamol given to a baby or child causes autism. The recent discussion and research have largely focused on exposure during pregnancy, not routine use in children.
Parents should still follow the dosing instructions carefully. Paracetamol doses for children are based on age and weight, and too much can cause serious liver damage. Check whether other cold, flu or pain medicines also contain paracetamol, as accidentally combining products can lead to an overdose. Before using any medication, we advise that you speak with your medical team first.
What Should Parents Know About Autism Traits in Boys and Girls?
Autism traits can look different in boys and girls, and no single behaviour confirms autism. Assessment considers a child’s development, communication, sensory profile, behaviour, strengths and functioning across home, school and social settings.
Some boys may show more obvious repetitive behaviour, intense interests, language differences or difficulty with social communication.
Some girls may mask, copy peers, rehearse conversations or hold things together at school before becoming exhausted or distressed at home. This can mean signs of autism in teenage girls are noticed later than signs in some boys.
Parents may also notice:
- difficulty managing changes or uncertainty
- strong sensory sensitivities
- highly focused interests
- differences in eye contact or social communication
- trouble understanding unspoken social rules
- shutdowns, distress or exhaustion after social situations
- a large difference between behaviour at home and school
These traits can also overlap with ADHD, anxiety, language difficulties and other developmental differences. That is why assessment looks at the whole child rather than one online checklist.
When Should Parents Ask About an Autism Assessment?
Parents should ask about an autism assessment when developmental, communication, sensory or social concerns are ongoing and affecting their child’s daily life. You do not need to be certain that your child is autistic before seeking advice.
Sometimes a teacher has raised concerns. Sometimes a teenager is coping at school but falling apart at home. Sometimes a parent simply keeps thinking, “Something does not quite add up.” You know your child best and that concern is enough to begin a conversation.
An assessment is not about changing who your child is. Your child will be the same child tomorrow, regardless of what you learn about them. The value of assessment is that it can provide clarity, explain their needs and help everyone make a more useful plan. If you feel that this could be helpful for your child, we invite you to fill out a booking enquiry here.
What Is the Final Verdict on Tylenol, Acetaminophen, Paracetamol and Autism?
The bottom line is that current research does not show that Tylenol, acetaminophen or paracetamol causes autism. Large recent studies (linked above), sibling comparisons, a recent systematic review, the TGA and the World Health Organization all support that conclusion.
Parents should continue to use medicines carefully and seek individual advice during pregnancy. But they should not be left carrying guilt because of a headline that goes further than the evidence allows.
FAQS
Can Autism Be Diagnosed During Pregnancy?
No. Autism cannot currently be diagnosed during pregnancy through a routine blood test, ultrasound or genetic screening test.
Some genetic conditions associated with a higher likelihood of autism can be identified before birth, but this is not the same as diagnosing autism.
Can a Blood Test Confirm Autism in a Child?
No. There is currently no blood test that can confirm whether a child is autistic.
Autism is identified through a developmental assessment that considers communication, behaviour, sensory differences, developmental history and how the child manages across different settings.
Can Autism Traits Become More Noticeable in the Teenage Years?
Yes. Autism traits can become more noticeable during adolescence as social expectations, school demands and emotional pressures increase.
A teenager who managed reasonably well in primary school may begin struggling with friendships, organisation, sensory overload, anxiety or exhaustion once life becomes more complex.
Why Are Autism Signs Sometimes Missed in Girls?
They may seem quiet, anxious, perfectionistic or socially capable at school, then become overwhelmed or distressed at home. This can delay recognition and assessment.
Can Autism and ADHD Occur Together?
Yes. Autism and ADHD can occur together, and a child or teenager may meet the criteria for both.
The two conditions can share traits such as sensory differences, emotional regulation difficulties, social challenges and trouble with attention or organisation, which is why a thorough assessment is important.
Does an Autism Diagnosis Change Who a Child Is?
No. An autism diagnosis does not change the child.
It gives families, schools and health professionals a clearer understanding of the child’s strengths, needs and experiences, which can make it easier to put the right support in place. Submit a booking enquiry if you feel like you would like to speak to us about a potential autism assessment for you child.
-- All About Kids
