Send us Fan Mail Does Tylenol in pregnancy cause autism or ADHD? In this edition of Neo News, Ben and Eli break down a major JAMA Internal Medicine study from Hong Kong that followed hundreds of thousands of mother-child pairs and used a sibling-matched design to answer the question. The verdict: no association between prenatal acetaminophen exposure and autism spectrum disorder or ADHD, regardless of timing, pattern, or dose. But data alone doesn't win hearts. The conversation turns to the b...