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The use of cannabis during pregnancy leads to poorer health outcomes for babies, according to research from the University of Adelaide’s Robinson Research Institute.

Published in the Medical Journal of Australia, the study found that continued use of cannabis at 15 weeks of pregnancy was associated with significantly lower birthweight, head circumference, birth length, and gestational age at birth, as well as with more frequent severe neonatal morbidity or death.

Study leader, Dr. Luke Grzeskowiak, from the Robinson Research Institute at the University of Adelaide, says cannabis is the most widely used by