Professor Jennifer D. Thomas, co-director of the Center for Behavioral Teratology at San Diego State University who co-authored the rodent study told Newsweek: "Although it has been known that prenatal alcohol exposure can adversely affect later behavioral development, this study suggests that prenatal cannabis exposure can also influence behavioral development, and that effects may be more severe when combined with alcohol.
"These results are important, as pregnant women may not be aware that cannabis could be harmful to their child," warned Thomas.
Gregory Cole, Professor and Chair of the Department of Biological and Biomedical Sciences at North Carolina Central University who co-authored the zebrafish study, told Newsweek: "This study is significant because it indicates that exposure of embryos to even small amounts of alcohol and cannabis during development may have long-term effects on behavior, with alterations in behavior being exhibited during adolescence.