Ancestry is a more useful category than race say Dorothy Roberts, professor of Africana studies, law and sociology at University of Pennsylvania, and Michael Yudell, chair and associate professor in the Department of Community Health and Prevention at Drexel University. In an interview on the WHYY program The Pulse, they gave an example of how the use of race can hinder diagnosis of serious ailments. “[B]ecause of the myth that sickle cell is a black disease, or cystic fibrosis is a white disease, white patients may be under diagnosed for sickle cell and other hemoglobin diseases, and black patients have been under diagnosed for cystic fibrosis.” Roberts and Yudell are authors of the recently published article “Taking race out of human genetics,” (Science, February 5, 2016, Vol. 351, Issue 6273, pp. 564-565).