Racism may contribute to some black women's developing hypertension at a higher rate than others, according to a national study looking at black women's health over an extended period of time. Nearly 43,000 women tracked over a four-year period reported experiencing racism, according to the study. But researchers found that foreign-born black women were more than twice as likely to experience racism compared with others they tracked using a questionnaire. Among that group, the researchers found 2,316 new hypertension cases.