The press is mocking RFK Jr. and President Trump for linking Tylenol to autism.
But universities like Harvard, Johns Hopkins, and Mount Sinai — none of them aligned with Trump or RFK — have published research showing the risks.
Science shouldn’t be political.
Short thread:🧵
But universities like Harvard, Johns Hopkins, and Mount Sinai — none of them aligned with Trump or RFK — have published research showing the risks.
Science shouldn’t be political.
Short thread:🧵
Harvard recently released one of the most comprehensive reviews yet, analyzing 46 studies that included data from more than 100,000 children.
They found consistent evidence that prenatal acetaminophen exposure is associated with a higher risk of autism and ADHD.
The authors stressed this doesn’t prove causation, but the evidence is strong enough that they recommend mothers only use acetaminophen sparingly — the lowest dose, for the shortest time, and under medical guidance.
They found consistent evidence that prenatal acetaminophen exposure is associated with a higher risk of autism and ADHD.
The authors stressed this doesn’t prove causation, but the evidence is strong enough that they recommend mothers only use acetaminophen sparingly — the lowest dose, for the shortest time, and under medical guidance.
Researchers at Mount Sinai reached a similar conclusion.
In August 2025, they published a study using the rigorous Navigation Guide methodology to evaluate the existing literature.
They found that prenatal exposure to acetaminophen may increase the risk of neurodevelopmental disorders, including autism and ADHD.
Mount Sinai’s team emphasized that this was the first systematic review applying that high-level framework, and their findings added weight to Harvard’s warning.
In August 2025, they published a study using the rigorous Navigation Guide methodology to evaluate the existing literature.
They found that prenatal exposure to acetaminophen may increase the risk of neurodevelopmental disorders, including autism and ADHD.
Mount Sinai’s team emphasized that this was the first systematic review applying that high-level framework, and their findings added weight to Harvard’s warning.
Researchers at Johns Hopkins, working with the Boston Birth Cohort, found striking results.
In a study of 996 mother–infant pairs, cord plasma biomarkers of fetal exposure to acetaminophen were linked to a significantly increased risk of both ADHD and autism.
The authors wrote: “These findings suggest in utero exposure to acetaminophen is associated with increased risk of attention-deficit/hyperactivity disorder and autism spectrum disorder in children and warrant additional investigations.”
In a study of 996 mother–infant pairs, cord plasma biomarkers of fetal exposure to acetaminophen were linked to a significantly increased risk of both ADHD and autism.
The authors wrote: “These findings suggest in utero exposure to acetaminophen is associated with increased risk of attention-deficit/hyperactivity disorder and autism spectrum disorder in children and warrant additional investigations.”
The mainstream media is already doing Big Pharma’s bidding, dismissing this story as “debunked.”
The reality couldn’t be further from the truth.
Most of the studies coming out now show a clear pattern — Tylenol use during pregnancy is correlated with higher autism risk.
That shouldn’t be ignored.
And here’s an important point: the universities publishing these results — Harvard, Johns Hopkins, Mount Sinai — are not institutions friendly to RFK Jr. or Donald Trump.
The fact that their research is showing these risks proves this isn’t partisan politics.
At the same time, the Trump administration should be careful not to put all their eggs in one basket.
Tylenol in pregnancy is not the sole cause of autism.
To say so would be nonsense.
There are many factors at play: genetics, food, overmedication, vaccines, pesticides, environmental toxins, and even over-diagnosis all likely contribute to the epidemic.
This is a small but critical step toward finally confronting the autism crisis.
The Trump administration and the press alike should follow the science wherever it leads.
There’s still so much more work to do.
The reality couldn’t be further from the truth.
Most of the studies coming out now show a clear pattern — Tylenol use during pregnancy is correlated with higher autism risk.
That shouldn’t be ignored.
And here’s an important point: the universities publishing these results — Harvard, Johns Hopkins, Mount Sinai — are not institutions friendly to RFK Jr. or Donald Trump.
The fact that their research is showing these risks proves this isn’t partisan politics.
At the same time, the Trump administration should be careful not to put all their eggs in one basket.
Tylenol in pregnancy is not the sole cause of autism.
To say so would be nonsense.
There are many factors at play: genetics, food, overmedication, vaccines, pesticides, environmental toxins, and even over-diagnosis all likely contribute to the epidemic.
This is a small but critical step toward finally confronting the autism crisis.
The Trump administration and the press alike should follow the science wherever it leads.
There’s still so much more work to do.
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