Now, here’s where it gets interesting. Of these 117,130 pregnant individuals, 4.6% screened positive for cannabis use during early pregnancy. That’s about 5,388 cannabis-using moms-to-be, if my back-of-the-rolling-paper math is correct. So, what did they find? Hold onto your hats, because this might blow your mind: maternal prenatal cannabis use was not associated with an increased risk of offspring developing ADHD or disruptive behavior disorders (DBD). In fact, the adjusted hazard ratio for ADHD was 0.84, which is science-speak for “Nope, no link here.”