African Americans in the U.S. are more likely to die of cancer. It seems that a similar disparity exists for strokes and lead poisoning.
Many ethnic groups have a higher death rate from stroke than non-Hispanic whites. Although the death rate from stroke nationwide dropped 70% between 1950 and 1996, minorities the decline was greatest in non-Hispanic whites. The greatest number of stroke deaths compared to whites occurred in African-Americans and Asians/Pacific Islanders. Excess deaths among racial/ethnic groups could be a result of a greater frequency of stroke risk factors, including obesity, hypertension, physical inactivity, poor nutrition, diabetes, smoking and socioeconomic factors such as lack of health insurance. (source)
Lead poisoning causes, i.a., cognitive delay, hyperactivity, and antisocial behavior.