You and some ‘cavemen’ get a genetic checkup

Evolution has weeded out genetic variants associated with diseases for millennia and propagated variants that protect against ailments, a comparative genetics study shows. But in the last 500 to 1,000 years that trend appears to have changed. Is the apparent reversal in genetic health underpinnings real? Or an odd coincidence in the early data set of this very new research field?
Strange & Offbeat: Fossils & Ruins News — ScienceDaily