This discussion seems (as most discussions on race are) weirdly ahistorical. When people discuss Black people, they're not discussing "Black culture", and certainly not "a set of physiological characteristics prominent among those identified/self-identified as Black." They're identifying people as Black and associating traits to that identification. That's all.

I'm not yet convinced, therefore, that race has gained some new meaning, much less a scientifically demonstrable quality. More likely, people are scrambling to preserve a notion that has always been, at its heart, fiction, only now, the fiction is, at last, being laid completely bare.

How, then, does one have a "race-based" medicine when race is a social and political construction? That would be like having a "Latino-based" medicine or a "Nevada-based" medicine, namely, silly at best, monstrous at worst.