Women who use marijuana during pregnancy run a greater risk of having children who develop psychotic-like behaviors, a study from Washington University in St. Louis says.
The “Adolescent Brain and Cognitive Development Study” published Wednesday on the JAMA Network Open website’s JAMA Psychiatry comes after a study in 2019 found marijuana use by pregnant women more than doubled between 2002 and 2017—from 3.4% to 7%.
The JAMA study analyzed data on 11,489 children between the ages of 9 and 11 across the United States from 2016 and 2018.
Researchers counted 655 children who were exposed to marijuana in the womb, which they suggested was low since the study was self-reported. Children whose mothers had used marijuana during pregnancy were more likely to have psychotic-like behaviors and more attention, social and sleep problems, as well as weaker cognitive abilities.
“This study suggests that prenatal cannabis exposure and its correlated factors…