Link Between Cannabis Use During Pregnancy and Autism Risk

Overview of the Study

A recent study conducted in Canada has established a connection between cannabis consumption during pregnancy and an increased risk of autism in children. With the legalization of cannabis in various regions, understanding its potential risks is crucial. Assessing the effects of cannabis on fetal development is essential for expecting parents.

Insights from Dr. Walker

Dr. Mark Walker, a Professor at the University of Ottawa, noted the rising trend of cannabis use among pregnant women. He expressed concern, stating, “This is concerning, because we know so little about how cannabis affects pregnant women and their babies. Parents-to-be should inform themselves of the possible risks, and we hope studies like ours can help.” Current guidelines from Health Canada advise against cannabis use for both pregnant and breastfeeding women.

Study Methodology

Dr. Walker and his research team analyzed data from the provincial birth registry to retrospectively assess the neurodevelopmental outcomes of children born in Ontario between April 2007 and March 2012. The focus was to identify any links between cannabis use during pregnancy and the neurodevelopment of the children.

Findings on Autism and Neurodevelopmental Disorders

The study revealed an association between maternal cannabis use and a higher incidence of autism spectrum disorder (ASD) in children. Women who used cannabis during pregnancy were more likely to have children diagnosed with ASD compared to those who abstained. Additionally, the research indicated a rise in intellectual disabilities and learning disorders among children whose mothers consumed cannabis while pregnant.

Limitations of the Study

While the study participants did not report using substances other than cannabis, the specifics of their cannabis use—such as frequency and amount—were not documented. This limitation suggests that other factors could potentially influence the neurodevelopment of these children. Consequently, while the study found a correlation, it cannot conclusively establish cannabis as the sole cause.

Implications for Healthcare Providers

The researchers anticipate that their findings will provide valuable insights into the risks associated with cannabis use during pregnancy. This information can assist healthcare providers in offering guidance to women regarding their health choices during pregnancy.

Reference

Corsi, D., Donelle, J., Sucha, E., Hawken, S., Hsu, H., El-Chaâr, D., Bisnaire, L., Fell, D., Wen, S. W., & Walker, M. (2020). Maternal cannabis use in pregnancy and child neurodevelopmental outcomes. Nature Medicine. DOI: 10.1038/s41591-020-1002-5