Using marijuana during pregnancy could affect a baby\’s brain development by interfering with how brain cells are wired, a new study in mice and human tissue suggests.

Researchers studied marijuana\’s effects on mice and brain tissue from human fetuses, and found that the active ingredient in marijuana, THC, interferes with the formation of connections between nerve cells in the cerebral cortex, the part of the brain responsible for higher thinking skills and forming memories.

\”Our advice is that [pregnant] mothers should avoid marijuana,\”said neuroscientist Tibor Harkany of the Karolinska Institute in Sweden, and the Medical University of Vienna, in Austria, who led a study detailed today (Jan. 27) in the EMBO Journal. [11 Facts Every Parent Should Know About Their Baby\’s Brain]

via Marijuana Use During Pregnancy Affects Baby’s Brain | LiveScience.