Black Americans are twice as likely to suffer from high blood pressure as white Americans  The same is true of the comparison between westernized black Africans and African whites
Considering health care, most African whites also pay attention to controlling their salt intake.
 The researchers hypothesized that the reason why westernized blacks suffer from high blood pressure is the interaction of two reasons: one is the high salt content of western food, and the other is the genetic adaptation mechanism of blacks to salt-deficient environment