Does an A.D.H.D. Link Mean Tylenol Is Unsafe in Pregnancy?
/For women who used acetaminophen but only for less than seven days, the risk of A.D.H.D. actually went down — something else that the researchers cannot explain.
All this does not actually prove cause and effect. “Maybe those who used it for a very long time had more severe fever or more severe pain than those who didn’t use it,” Dr. Ystrom said. “That is the alternative explanation, that these mothers who used it for a long time, they had a more severe type of condition.”
“What we found was that regardless of the reason they used acetaminophen, those who reported long-term exposure — 29 consecutive days or more — had a more than twofold risk of A.D.H.D.”