Women exposed to the herbicide glyphosate were more likely to experience shorter pregnancies, according to a study published last week in the journal Environmental Research. Glyphosate is the active ingredient in the widely used herbicide Roundup. Most research on the health effects of glyphosate has focused on workplace exposures — people who work in agriculture and as groundskeepers, for example—and on cancer outcomes. The new study joins a small but growing body of research in the United States exploring the health risks of glyphosate exposure during pregnancy. Glyphosate Study Follows Several Others Researchers tested urine samples from a racially and geographically diverse cohort of 163 pregnant women in California, Washington, Minnesota, and New York. They detected glyphosate in more than 94 percent of the samples and found an association between glyphosate exposure and shorter pregnancies. This latest study follows two others on glyphosate and pregnancy length, including a 2018 study of 71 pregnant women …