Fewer than 6% of American physicians identify as Black, but census data show roughly 12% of the U.S. population is Black. Some experts say that disparity is one reason communities of color tend to experience worse health outcomes in the U.S., including higher rates of high blood pressure, shorter life expectancy and higher risks during childbirth. A new book from a former ProPublica reporter links today’s inequalities to a long history of structural racism — part of which runs through North Carolina.