Babies who receive acetaminophen in the first year of life are significantly more likely to have symptoms of asthma and other allergies when they're a few years older.

A huge, worldwide study of more than 200,000 children also found that 6- and 7-year-olds who are given acetaminophen often - at least once a month - are three times as likely to suffer wheezing and whistling in their chests compared with children who never take the drug.

More...