Benzene is not included in Reproductive and Developmental Toxicants, a 1991 report published by the U.S. General Accounting Office (GAO) that lists 30 chemicals of concern because of widely acknowledged reproductive and developmental consequences. However, it has been shown to cross the placenta in humans and to be fetotoxic in animals. No information was located as to the presence of benzene in breast milk or of the potential transfer to nursing infants.
Benzene has very weak genotoxicity, Nonetheless, special consideration regarding the exposure of pregnant women is warranted. Medical counseling is recommended for the acutely exposed pregnant woman.