Warning: Tylenol is found to be risky during pregnancy!

A new study in the New England Medical Journal has shown an association between the use of acetaminophen (Tylenol) and the development of ADHD and other hyperkinetic disorders (HKD) in children!     (Acetaminophen use during pregnancy, behavioral problems, and hyperkinetic disorders published online JAMA Pediatric Feb 2014; )

I wonder what other risks Acetaminophen has that haven't been studied yet?

Side note...According to the FDA in 2005, 28 billion doses of Acetaminophen products were purchased, and has been the most frequently prescribed drug since 1997!