One hundred forty women and their consorts, admitting to the use of lysergic acid diethylamide (LSD) prior to or during pregnancy were observed through 148 pregnancies. There were 83 live newborns; 8 had major congenital defects. There were 65 abortions; 53 therapeutic and 12 spontaneous. Four of 14 embryos from therapeutic abortions showed gross anomalies. Forty-three percent of...