Defenders of Darwinian medicine assert that understanding the evolutionary cause of a disease process, beyond the understanding of the proximate cause (i.e. the scientific cause, traditionally understood) is of significant value in medicine.
I believe that the evolutionary cause is a matter of speculation, and of no real value to medicine. It may be of value to evolutionary biology, but that's a different matter.
Here's my challenge:
Please provide examples of evolutionary speculation offered for any disease that has provided medical scientists with information valuable for management of the disease that was not already available from the proximate evidence.
Simple assertion of a hypothetical evolutionary cause-- the best example is probably the protection from malaria conferred by the heterozygote sickle cell trait-- is not sufficient to be of value in medical research and treatment. It is of value to evolutionary biology if true, but malaria treatment does just fine without it.
In my view, Darwinian medicine is all hat, no cattle. Show me the cattle.