Miller JM, et al. - This study evaluated the relationship between marijuana use and sexually transmitted diseases in pregnant women. Via retrospectively reviewing of clinic records over a 12-1/2 month period, they identified 86 women using no illicit substance other than marijuana and 441 drug-free women for comparison. The prevalence of none of the sexually transmitted diseases (gonorrhea, chlamydia, syphilis, human immunodeficiency virus, hepatitis B surface antigen, human papilloma virus, and herpes) was significantly different between pregnant women who used marijuana and drug-free pregnant women. This suggests no association of marijuana use with sexually transmitted disease in pregnant women.