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Another study shows correlation between acetaminophen and ADHD/autism

Author: MarkHarman (7430 Posts - Original UHND Member)

Posted at 7:56 am on Sep 29, 2025
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I realize Chris will belittle me again and Ty will come up with some counter link, but how do you explain this? From Johns Hopkins, no less: "The researchers analyzed data from the Boston Birth Cohort, a 20-year study of early life factors influencing pregnancy and child development. They found that children whose cord blood samples contained the highest levels of acetaminophen—the generic name for the drug Tylenol—were roughly three times more likely to be diagnosed with ADHD or autism spectrum disorder later in childhood, compared to children with the lowest levels of acetaminophen in their cord blood."

Link: https://hub.jhu.edu/2019/11/05/acetaminophen-pregnancy-autism-adhd

Replies to: Another study shows correlation between acetaminophen and ADHD/autism


Thread Level: 2

They found an association,not causality.They relied on maternal self reporting of acetaminophen use-

Author: BaronVonZemo (61393 Posts - Joined: Nov 19, 2010)

Posted at 1:18 pm on Sep 30, 2025
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Mark, I would not change my practice patterns based on what has come out so far (and I have used Tylenol as has every other doctor for years. HOWEVER…..

I have also been around long enough to know that ANY drug not necessary should be avoided during pregnancy because we are FAR from knowing everything. That rule includes all drugs including Tylenol.

I do think that this study along w the Boston meta deserve a close look w prospective randomized trials where nebulous factors such as self reporting are taken out of the study design. This researcher knows that, and he published this study just to make the point that there is a potential association and we need to look at this. It was published undoubtedly as well because of all of the political in the topic.

Idiots on this board who know nothing about this want Tylenol to be used broadly in PG simply because Trump said not to do so. The same is true for some going in the other direction.

We can only act on what we have as our best data. That data is ever changing….and it may or may not be changed with further findings.

I don’t recommend any drug in PG unless the benefits outweigh the risks. The benefits are usually minor for acetaminophen, but sometimes not. It’s an case by case decision for the Dr and the patient at this point. I certainly wouldn’t (and never have even before this issue came into the public eye) recommend a drug use without a strong reason


Thread Level: 3

That's a very reasoned take

Author: MarkHarman (7430 Posts - Original UHND Member)

Posted at 7:59 pm on Sep 30, 2025
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I was very clear towards Chris to say the studies appear to show Tylenol safe up to a certain threshold. You would know better than I what that threshold may look like. But unfortunately you don't know better than Ty. Ask him.

Thread Level: 2

Do you believe Bobby is qualified or unqualified to be in charge of health care and health issues?

Author: ND521 (9644 Posts - Joined: May 10, 2016)

Posted at 8:43 pm on Sep 29, 2025
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(no message)

God may not care who wins, but His mother does
Thread Level: 2

He belittles you because your sources lack credibility. You cherry pick “studies” to fit…

Author: Domer From Hell (16985 Posts - Original UHND Member)

Posted at 11:19 am on Sep 29, 2025
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Your nutty narrative. Sad, but true.

We're all born bald baby!
Thread Level: 3

So aren't people who say it's safe ignoring the studies saying it isn't?

Author: MarkHarman (7430 Posts - Original UHND Member)

Posted at 4:10 pm on Sep 29, 2025
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Seems like it, right?

This message has been edited 1 time(s).

Thread Level: 4

Those studies have no merit, so no.

Author: Domer From Hell (16985 Posts - Original UHND Member)

Posted at 6:16 pm on Sep 29, 2025
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(no message)

We're all born bald baby!
Thread Level: 4

Mark, you're not acknowledging the last two paragraphs of your linked paper...

Author: TyroneIrish (21946 Posts - Joined: Oct 8, 2020)

Posted at 5:51 pm on Sep 29, 2025
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...here's what they concluded...
-------------------------
Wang points out that although the study found a consistent association between biomarkers of acetaminophen and its metabolites in cord blood and child risk of ADHD and autism spectrum disorder, it should not be interpreted that the Tylenol use causes these disorders.

"More studies are clearly needed to further clarify the concern," Wang says. "Until it is certain, parents and providers may want to consider the benefit and potential risk when making a decision on the use of acetaminophen during pregnancy or the peripartum period."
------------------------

The Johns Hopkins team is NOT calling for a halt in the use of Tylenol during pregnancy, because it is Still Not Certain that Acetaminophen Causes Autism or ADHD....you misread their conclusion.



Thread Level: 4

No, idiot. They take them all into consideration.

Author: Chris94 (37377 Posts - Original UHND Member)

Posted at 4:25 pm on Sep 29, 2025
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And if you would spend 5 minutes outside the imbecile bubble you'd hear people say that the evidence is more mixed than it is for vaccines (which are not related to autism), but that the biggest studies suggest that there is no connection.

No other pain killer is OK'd for pregnant women. So those who avoid taking Tylenol risk exposing their fetuses to fevers - which are much more dangerous than the tenuous connection to autism.

So this is harmful bullshit.


Thread Level: 5

So the Johns Hopkins study is wrong? Look at what it specifically said more closely

Author: MarkHarman (7430 Posts - Original UHND Member)

Posted at 5:49 pm on Sep 29, 2025
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Let's go over what it said: "children whose cord blood samples contained the highest levels of acetaminophen—the generic name for the drug Tylenol—were roughly three times more likely to be diagnosed with ADHD or autism spectrum disorder."

"Highest" levels. You think I'm the idiot? I concede using acetaminophen isn't a correlation as long as it's used below a certain threshold, as the study indicates. Are you willing to concede there's a correlation if used past a certain threshold? Remember, that's what the Harvard study also found.


This message has been edited 1 time(s).

Thread Level: 6

It’s one study. There are many many many studies. That’s what you cannot grasp, evidently.

Author: Chris94 (37377 Posts - Original UHND Member)

Posted at 7:27 pm on Sep 29, 2025
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(no message)

Thread Level: 7

It's a unique study

Author: MarkHarman (7430 Posts - Original UHND Member)

Posted at 8:25 am on Sep 30, 2025
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I never said taking Tylenol was unsafe. What I said was research makes it clear taking more than a certain threshold is correlated to ADHD and autism, as the two studies state.

I think you disagree with me simply because I was the one who pointed something out. And I'm about to put you into the Lack-Of-Logic Hall of Fame with charter member Ty. I concede you're incredibly intelligent but like many highly intelligent people, somehow the logic gene wasn't given to you.


Thread Level: 6

Read the last paragraph

Author: Domer From Hell (16985 Posts - Original UHND Member)

Posted at 6:21 pm on Sep 29, 2025
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(no message)

Link: https://www.fda.gov/news-events/press-announcements/fda-responds-evidence-possible-association-between-autism-and-acetaminophen-use-during-pregnancy

We're all born bald baby!
Thread Level: 3

So you know more about this than the researchers at Johns Hopkins?

Author: MarkHarman (7430 Posts - Original UHND Member)

Posted at 4:07 pm on Sep 29, 2025
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(no message)

Thread Level: 2

The 'March of Dimes', American Pediatric Society, American College of Obstetricians and

Author: TyroneIrish (21946 Posts - Joined: Oct 8, 2020)

Posted at 10:13 am on Sep 29, 2025
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Gynecologists (Baron's Specialty), as well as many other Physicians and Scientists all recommend the use of 'Tylenol' in order to reduce the risk of harm to mother and baby during pregnancy...after consultation with their doctor, and then only in the lowest dosage and frequency needed to treat the fever....they do not categorically advise against taking that fever reducing drug, since the alternatives entail more risk to mother and baby.

The members of those organizations have seen all the studies...and more...that you reference.. They care as much as anyone for the health and well-being of pregnant moms and babies.

BTW, ask Baron if he agrees with ACOG...and if he's ever advised his patients to take Tylenol when they've experienced fevers Surprisingly, I haven't heard a peep from him over this issue that lands squarely in his bailiwick.


Link: https://www.marchofdimes.org/find-support/blog/can-having-fever-while-pregnant-hurt-my-baby

Thread Level: 3

.

Author: BaronVonZemo (61393 Posts - Joined: Nov 19, 2010)

Posted at 1:16 pm on Sep 30, 2025
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(no message)

This message has been edited 1 time(s).

Thread Level: 3

Yeah, but Mark found one study that showed a correlation. I don't know who to believe!

Author: Chris94 (37377 Posts - Original UHND Member)

Posted at 11:11 am on Sep 29, 2025
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(no message)

Thread Level: 2

Want me to post all the ones that show no connection?

Author: Chris94 (37377 Posts - Original UHND Member)

Posted at 9:39 am on Sep 29, 2025
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You know better than all experts, because you have Google!

Thread Level: 3

Yes, please post one that shows zero correlation no matter how much Tylenol is taken

Author: MarkHarman (7430 Posts - Original UHND Member)

Posted at 4:08 pm on Sep 29, 2025
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(no message)

This message has been edited 1 time(s).

Thread Level: 3

Those idiots at JHU.

Author: iairishcheeks (28370 Posts - Original UHND Member)

Posted at 10:59 am on Sep 29, 2025
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(no message)

Thread Level: 4

Gravitas!

Author: Hensou (9199 Posts - Joined: Dec 21, 2022)

Posted at 11:19 am on Sep 29, 2025
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(no message)

Thread Level: 5

Why even commission new studies?!?!

Author: iairishcheeks (28370 Posts - Original UHND Member)

Posted at 1:12 pm on Sep 29, 2025
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(no message)

Thread Level: 6

As you suggested, JHU is half-assed and not credible.

Author: Hensou (9199 Posts - Joined: Dec 21, 2022)

Posted at 3:11 pm on Sep 29, 2025
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(no message)

This message has been edited 1 time(s).

Thread Level: 7

Random Tulane professors of "social science" carry a lot more weight.

Author: iairishcheeks (28370 Posts - Original UHND Member)

Posted at 5:26 pm on Sep 29, 2025
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(no message)

Thread Level: 8

Random Tulane professors of "social science" do not pretend to be experts

Author: Chris94 (37377 Posts - Original UHND Member)

Posted at 10:57 pm on Sep 29, 2025
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At least in subjects that they are not experts in.

They trust the actual experts. Unlike MAGA cretins who think their dumbass uneducated opinions based on podcasts carry equal weight as those of the experts.


Thread Level: 9

The JHU study was not a podcast.

Author: Hensou (9199 Posts - Joined: Dec 21, 2022)

Posted at 8:29 am on Sep 30, 2025
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(no message)

Thread Level: 10

It's a copy and paste rant, details and facts matter none.

Author: iairishcheeks (28370 Posts - Original UHND Member)

Posted at 11:42 am on Sep 30, 2025
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(no message)

Thread Level: 9

Wow, you unloaded a lot of resentment there, hope you feel better.

Author: iairishcheeks (28370 Posts - Original UHND Member)

Posted at 12:10 am on Sep 30, 2025
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(no message)

Thread Level: 8

to be fair, the intelligentsia knows all

Author: WestCoastIrishFan (16412 Posts - Original UHND Member)

Posted at 6:21 pm on Sep 29, 2025
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(no message)

Thread Level: 2

it's interesting to see screen shots in various places of Tylenol employees suggesting against the

Author: WestCoastIrishFan (16412 Posts - Original UHND Member)

Posted at 8:21 am on Sep 29, 2025
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use of its products during pregnancy. TDS is very much a thing.

Thread Level: 2

There are types that always question mainstream medical norms

Author: Quest4twelve (7226 Posts - Joined: Aug 5, 2015)

Posted at 8:01 am on Sep 29, 2025
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You seem like that type.

Thread Level: 3

Yeah, some of them advance the field.

Author: iairishcheeks (28370 Posts - Original UHND Member)

Posted at 9:21 am on Sep 29, 2025
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(no message)

Thread Level: 4

When the science changed with Covid it was ok, but now…

Author: Protagonist (1130 Posts - Joined: Oct 21, 2012)

Posted at 9:59 am on Sep 29, 2025
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(no message)

Thread Level: 5

There are actual pregnant women on TikTok taking Tylenol because they hate Trump.

Author: iairishcheeks (28370 Posts - Original UHND Member)

Posted at 11:01 am on Sep 29, 2025
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(no message)

Thread Level: 6

Actual pregnant men as well...

Author: TakethetrainKnute (33929 Posts - Original UHND Member)

Posted at 11:08 am on Sep 29, 2025
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(no message)

Thread Level: 7

Tylenol enhances chest feeding.

Author: iairishcheeks (28370 Posts - Original UHND Member)

Posted at 11:17 am on Sep 29, 2025
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(no message)

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