Unfounded Claims Spark Global Health Concerns
Recent statements from U.S. President Donald Trump have ignited a global firestorm, urging pregnant women to avoid the common painkiller acetaminophen, known as Tylenol in the U.S. and paracetamol in many other countries, due to an unproven link to autism. The president’s advice to “fight like hell not to take it” has been met with swift and forceful condemnation from medical experts and international health agencies who warn that such claims are not supported by scientific evidence and could pose significant health risks to both mothers and their unborn children.
The controversy has had immediate real-world consequences. Following reports that the U.S. Department of Health and Human Services (HHS) was preparing to release a study on the matter, shares of Kenvue, the consumer health company that produces Tylenol, plummeted by more than 10% on September 5, 2025, as reported by digitaltrendstoday.com. In response, Kenvue issued a statement affirming its belief that “there is no causal link between the use of acetaminophen during pregnancy and autism.”
Examining the Scientific Evidence
While a handful of observational studies have suggested a possible *association* between acetaminophen use during pregnancy and a slightly higher likelihood of a child being diagnosed with autism, leading scientists stress that association does not equal causation. Experts point out that it is incredibly difficult to disentangle the medication’s effect from the underlying reason it was taken, such as fever or infection, which are themselves considered potential risk factors for neurodevelopmental issues.
The most comprehensive research to date, a Swedish study involving the health records of 2.4 million children born between 1995 and 2019, provides crucial insight. Initially, researchers found a very small difference in autism rates: 1.5% among children whose mothers were prescribed paracetamol versus 1.3% for those who were not. However, this weak association vanished completely when the researchers compared siblings where the mother used paracetamol in one pregnancy but not the other. This sibling-control method strongly suggests that shared genetics or other family environmental factors, not the medication, are the likely explanation for the initial observation.
Global Health Agencies Reaffirm Safety
In the wake of the U.S. administration’s comments, health authorities worldwide have moved to reassure the public. The European Medicines Agency (EMA), the UK’s Medicines and Healthcare products Regulatory Agency (MHRA), and Health Canada have all issued statements confirming that paracetamol remains a safe and recommended option for pain and fever relief during pregnancy.
Steffen Thirstrup, chief medical officer of the EMA, stated, “Our advice is based on a rigorous assessment of the available scientific data and we have found no evidence that taking paracetamol during pregnancy causes autism in children.”
The Dangers of Untreated Illness in Pregnancy
Medical professionals are particularly concerned that the unsubstantiated claims will cause pregnant women to endure unnecessary pain or, more dangerously, avoid treating fevers. The American College of Obstetricians and Gynecologists (ACOG) and other leading medical bodies have highlighted the well-documented risks of untreated conditions during pregnancy.
- Untreated Fever: A high fever, especially in the first trimester, can increase the risk of birth defects, miscarriage, and premature birth.
- Untreated Pain: Chronic pain can lead to maternal anxiety, depression, and high blood pressure, which can negatively impact a pregnancy.
Paracetamol is widely regarded as the safest over-the-counter painkiller for pregnant women, as other common options like ibuprofen are generally not recommended, particularly in the later stages of pregnancy. While the U.S. Food and Drug Administration (FDA) is updating the Tylenol label to mention a “possible association,” the agency makes it clear that a causal relationship has not been established. The prevailing medical advice remains for pregnant women to consult their healthcare provider and use the lowest effective dose for the shortest necessary duration when treatment is required.
