Tylenol, Vaccines, and Leucovorin: What Trump and RFK Jr. Got Wrong
At a White House event, President Trump, flanked by HHS Secretary Robert F. Kennedy Jr., FDA Commissioner Marty Makary, NIH Director Jay Bhattacharya and CMS Director Mehmet Oz announced that Tylenol use in pregnancy causes autism and promoted leucovorin as a treatment. Trump also used the stage to revisit old anti-vaccine talking points, repeating long-debunked claims about MMR, mercury, and hepatitis B vaccination. The problem is not asking scientific questions; it is presenting the public with false certainties that contradict high-quality evidence and sow unnecessary fear among parents and patients.
When it comes to Tylenol (acetaminophen), the science is clear: the strongest and most methodologically rigorous data do not support a causal link with autism. While earlier observational studies raised concerns about possible associations, these studies were plagued by confounding factors that distort the relationship. Women take acetaminophen for fever, pain, or infections, and those underlying conditions themselves may affect child outcomes. A landmark 2024 Swedish sibling-comparison study, which analyzed more than 2.4 million births, controlled for family and genetic factors. The result was unambiguous: no increased risk of autism, ADHD, or intellectual disability in children exposed to acetaminophen during pregnancy.
In August 2025, a Harvard-affiliated review suggested acetaminophen use in pregnancy might increase the risk of autism and ADHD. But the study was flawed. It relied heavily on observational data and retrospective recall, which are prone to bias, and many of the included studies failed to separate the effects of acetaminophen from the fevers, pain, or illnesses it was taken to treat.
Experts also noted conflicts of interest and pointed out that higher-quality studies, like the massive Swedish sibling-comparison analysis, show no increased risk once genetics and environment are controlled. That’s why groups like the Society for Maternal-Fetal Medicine quickly cautioned that the Harvard review does not prove causation and should not change practice.
Professional organizations such as the American College of Obstetricians and Gynecologists have reaffirmed that acetaminophen remains the safest analgesic option in pregnancy when used appropriately. Untreated high fever, in contrast, is known to pose risks to both mother and fetus. Trump and Kennedy’s rhetoric ignores this reality, scaring pregnant people away from safe, recommended care.
On leucovorin (folinic acid), the evidence is promising but preliminary. Small randomized controlled trials have shown modest improvements in language or adaptive behavior among subsets of autistic children, especially those with folate-receptor autoantibodies. These findings are intriguing and worthy of further study, but they do not make leucovorin a cure or a universally effective therapy. No major guideline endorses it as standard of care, and it should only be considered as an adjunct to evidence-based behavioral and educational interventions. By overselling leucovorin as a breakthrough, today’s announcement risks creating false hope and distracts from the supports that autistic children and their families truly need.
Trump also used this platform to recycle anti-vaccine talking points that have been repeatedly disproven. He wants to separate the MMR vaccine into separate components for no clear reason. He continues to raise the specter of “mercury in vaccines,” ignoring the fact that thimerosal was removed from all routine childhood vaccines more than twenty years ago, with no change in autism rates. And his comments about hepatitis B vaccination for newborns mischaracterize both the science and the stakes: hepatitis B is a serious, life-threatening infection that can be transmitted from mother to child at birth, and universal vaccination at birth has saved countless lives. Suggesting otherwise only undermines trust in a public health intervention that has near-universal support among pediatricians, infectious disease specialists, and global health experts.
Taken together, the claims made by Trump and Kennedy represent a dangerous blend of cherry-picked science, outdated misinformation, and political theater. The strongest data do not implicate Tylenol as a cause of autism, and promoting leucovorin as a treatment oversimplifies a nuanced research area. Most troubling, Trump’s recycling of anti-vaccine tropes continues to put children at risk by eroding trust in lifesaving immunizations. Families deserve better: clear communication rooted in evidence, compassion for the challenges of pregnancy and parenting, and respect for the dignity of autistic people rather than false promises of cures.
Final thought
Pregnancy already comes with enough stress. Autistic children and their families already carry enough stigma. They deserve accuracy, compassion, and practical, evidence-based guidance, not podium science and painkiller panic. If we care about healthy moms and healthy babies, we follow the data we have, keep studying the questions we don’t, and refuse to shame parents for making standard, sensible choices in consultation with their doctors.
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Every last one of these clowns is invited to kiss my entire autistic ass. I am not broken or a disgrace, and neither are my two beautiful autistic now-grown kids. We have more empathy, humanity and intelligence in our little toes than the entire administration has ever had.
1. What did they get right?
2. Trump said women shouldn’t take Tylenol when they’re pregnant, and until now it was pretty much the only pain medication considered safe for use in pregnancy. He said they should “tough it out”. Maybe it’s just me, but I am getting a sense that they think women are supposed to suffer to bear children. And nothing should be done to alleviate any suffering. Not just during childbirth, but during pregnancy as well. After all, we’re just vessels, incubators, we don’t matter as people.