Research suggests a potential link between prenatal cannabis exposure and adolescent mental health issues. While previous studies found associations between the two, the biological mechanisms were unclear. A new study, published in Nature Mental Health, explores potential mechanisms, including reduced neuroinflammation and accelerated aging. Hosts Jessica Reyes and Patricia Wu are joined by Dr. Jude Black to discuss the study in this segment of Psychology Behind the Headlines.
Cognitive decline in children with exposure
The study used data from the Adolescent Brain and Cognitive Development Study, analyzing neuroimaging measurements of children exposed to cannabis before birth. The results suggest potential reductions in neuroinflammation, which could affect brain pruning during development. Another theory is that cannabis exposure leads to accelerated aging, potentially due to post-combustion products from smoking.
Genetics vs. Environment
However, establishing a direct causal link is challenging due to confounding factors like genetics and environment. The study’s retrospective nature also limits the accuracy of data on maternal cannabis use. Future prospective studies are needed to provide more definitive answers.
In the meantime, researchers advise pregnant individuals to consult their doctors about cannabis use and explore alternative options.
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