that 7% of women reported using cannabis during pregnancy in 2016–2017, up from about 3.4% in 2002–2003.
"In the current study, we're following up on that original observation," Baranger said."It's been a few more years, and we want to know what's changed for these children." Among children who had been exposed to cannabis both before and after their mothers knew of their pregnancy, the mean Total Problems score on the CBCL was 31.47 ± 23.41, which was significantly greater than the 23.78 ± 19.66 among those whose mothers consumed cannabis prior to knowing of their pregnancy only , and the 16.70 ± 15.55 for those who were not exposed to cannabis at all . Similar relationships were found in the various subscales of the CBCL.
Article vague and outcomes minimal. More useful research needed perhaps (smoking verses Ingestion?). To be honest, I've had my fill of scaremongering headlines.