Re: Some illnesses and treatments are race specific
"For example, some heart medications that work on Caucasians will kill Africans."
Can you be more specific, especially as to mechanism? If this is the case it's more likely to be a consequence of some specific allele. The risk would be correlated with some specific aspect of the patient's ancestry but a more sensible approach would be to test for that allele rather than make some judgement based on what the patient looks like.
