Pain Killer Use During Pregnancy Linked to ADHD

Women who use popular pain killer acetaminophen, found in Tylenol, while pregnant may be more likely to have children with attention deficit hyperactivity disorder or ADHD, a Norwegian study suggests.

The research, published in the journal Pediatrics, collected information from nearly 113,000 children and their parents. Of the final sample, nearly half of the women used acetaminophen during pregnancy. Nearly 2,250 were diagnosed with ADHD. Study authors say the link applies to long-term use -- a month or longer. In fact, the study found when future moms used the drugs for 8 days or less, their kids show a decreased risk for ADHD.

Acetaminophen is considered the safe drug for pregnant women who have a fever or pain, since ibuprofen may harm their baby. The lead author of the study told CNN pregnant women who need acetaminophen should not refrain from short-term use.