Reducing health disparities: the role of sleep deficiency and sleep disorders

•Sleep health measures differ by race/ethnicity and socioeconomic position.•The multilevel etiology of disparities in sleep health is not well understood.•Sleep deficiency is associated with conditions burdened by health disparities.•Research is needed to elucidate the contribution of sleep to health disparities.•Surveillance tools and cohorts are available to study sleep-related disparities.