injury (Keyes et al., 2012a; Witbrodt et al., 2014). At later stages of adulthood, Blacks have higher rates of lung cancer mortality (Gadgeel & Kalemkerian, 2003), and cardiovascular outcomes (Volkow et al., 2014). The reasons for the contrast in race/ethnic differences in substance use patterns, and in consequences of use, both in young adulthood and as individuals progress through the lifecourse, among users are unknown. Many of these consequences occur later in the lifecourse than adolescence or early adulthood, suggesting potential explanations of the contrast.
