Abstract
Debates are occurring about the relative contribution of genetic versus social factors to racial health disparities. An ideology of race is manifested in genetic arguments for the etiology of racial health disparities. There is also growing attention to people of mixed race since the 2000 US Census enabled them to be counted. Consideration of the complex issues raised by the existence of people of mixed race may bring clarity to the debates about racial health disparities, offer a challenge to the ideology of race, and afford important insights for the practice of research involving race.