New preclinical research reported in animal models shows that exposure to compounds found in marijuana called cannabinoids (CBs), which includes cannabidiol (CBD) and tetrahydrocannabinol (THC), during early pregnancy can cause malformations in the developing embryo. The research also demonstrated that co-exposure to CBs and alcohol increased the likelihood of birth defects involving the face and brain. The study, funded by the National Institute on Alcohol Abuse and Alcoholism (NIAAA), part of the National Institutes of Health, was published in Scientific Reports.

“Prenatal alcohol exposure is a leading preventable cause of birth defects and neurodevelopmental abnormalities in the United States,” said NIAAA Director, George F. Koob, Ph.D. “Since marijuana and alcohol are frequently used simultaneously, the combined effects of cannabinoids and alcohol are worrisome as well as the dangers of either substance alone.”

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