Seems like every decade or so, they do similar studies with similar outcomes and yet people still want to believe a mixed breed is healthier.
And what I'd like to know is WHY it isn't logic to understand that a purebred dog from generations of healthy dogs, bred for health, bred to diminish genetic disorders, is more likely to be healthy than a dog from mixed parents from people who simply let it happen with no idea of health or genetics. European studies have shown what incredible differences it makes on things like CHD and other inherited disorders when you breed clear to clear, clear to effected, etc. With their massive research I wish they would go back and separate out the well bred/tested purebreds from those without health/dna clearances.