Study finds link between acetaminophen use in pregnancy and behavioral problems in children


A new study published Monday in the journal JAMA Pediatrics found a link between acetaminophen, a pain reliever used by more than half of all pregnant women in the U.S. and Europe, and behavioral problems in children born to mothers who used it while pregnant.
Researchers found that compared to women who said they did not take acetaminophen at 18 weeks, those who did were 42 percent more likely to report hyperactivity in their children and 31 percent more likely to report conduct problems, the Los Angeles Times reports. For women who took acetaminophen at 32 weeks, they were 29 percent more likely than women who did not take it to report emotional difficulties in their child at age seven, and mothers who used the pain reliever even later in pregnancy were 46 percent more likely to have a child with a range of behavioral difficulties.
The study's authors say the link does not prove that using acetaminophen during pregnancy is the cause of behavioral problems, but it does raise concerns that exposure to it in the womb can increase neurodevelopmental problems. Previous research on mice has shown acetaminophen alters brain development, as it disrupts hormonal function in a developing fetus.
Subscribe to The Week
Escape your echo chamber. Get the facts behind the news, plus analysis from multiple perspectives.

Sign up for The Week's Free Newsletters
From our morning news briefing to a weekly Good News Newsletter, get the best of The Week delivered directly to your inbox.
From our morning news briefing to a weekly Good News Newsletter, get the best of The Week delivered directly to your inbox.
Sign up for Today's Best Articles in your inbox
A free daily email with the biggest news stories of the day – and the best features from TheWeek.com
Catherine Garcia has worked as a senior writer at The Week since 2014. Her writing and reporting have appeared in Entertainment Weekly, The New York Times, Wirecutter, NBC News and "The Book of Jezebel," among others. She's a graduate of the University of Redlands and the Columbia University Graduate School of Journalism.
-
Today's political cartoons - March 30, 2025
Cartoons Sunday's cartoons - strawberry fields forever, secret files, and more
By The Week US Published
-
5 hilariously sparse cartoons about further DOGE cuts
Cartoons Artists take on free audits, report cards, and more
By The Week US Published
-
Following the Tea Horse Road in China
The Week Recommends This network of roads and trails served as vital trading routes
By The Week UK Published
-
'Like a sound from hell': Serbia and sonic weapons
The Explainer Half a million people sign petition alleging Serbian police used an illegal 'sound cannon' to disrupt anti-government protests
By Abby Wilson Published
-
Israel detains director after West Bank settler clash
speed read The director of Oscar-winning documentary 'No Other Land' was arrested and beaten
By Rafi Schwartz, The Week US Published
-
Turkey arrests Istanbul mayor, a top Erdogan rival
Speed Read Protests erupted in Turkey after authorities detained Istanbul Mayor Ekrem Imamoglu
By Peter Weber, The Week US Published
-
Israel strikes Gaza, breaking ceasefire
Speed Read 326 Palestinians were killed in the first major attack since Netanyahu's government signed a ceasefire agreement with Hamas
By Peter Weber, The Week US Published
-
The arrest of the Philippines' former president leaves the country's drug war in disarray
In the Spotlight Rodrigo Duterte was arrested by the ICC earlier this month
By Justin Klawans, The Week US Published
-
Houthis vow retaliation amid US airstrikes
Speed Read Trump promises the US will use 'overwhelming lethal force' against the Houthis until they stop attacking Red Sea ships
By Peter Weber, The Week US Published
-
Pakistan train hostage standoff ends in bloodshed
Speed Read Pakistan's military stormed a train hijacked by separatist militants, killing 33 attackers and rescuing hundreds of hostages
By Peter Weber, The Week US Published
-
Ukrainian election: who could replace Zelenskyy?
The Explainer Donald Trump's 'dictator' jibe raises pressure on Ukraine to the polls while the country is under martial law
By Sorcha Bradley, The Week UK Published