Responsible breeding practices that prioritize genetic health and welfare over extreme conformation or market trends can dramatically reduce heritable disease.
Responsible breeding is upstream welfare prevention - every health-tested litter that avoids producing affected puppies prevents hundreds of thousands of dollars in veterinary costs and years of potential suffering for individual dogs and their families. Breeding for extreme conformation including flat faces, excessive skin folds, and miniaturized body plans creates predictable chronic suffering. The welfare dividend from comprehensive health testing and conformation reform compounds over generations.