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Dr. Benjamin Hart of the University of California, Davis, has been researching the effects of spay-neuter for a decade, with support from the American Kennel Club Canine Health Foundation. His first paper on the subject, published in 2013, revealed that Golden Retrievers that had been spayed or neutered had a correlation of being three o…
Dr. Benjamin Hart of the University of California, Davis, has been researching the effects of spay-neuter for a decade, with support from the American Kennel Club Canine Health Foundation. His first paper on the subject, published in 2013, revealed that Golden Retrievers that had been spayed or neutered had a correlation of being three or four times more likely to develop certain cancers, including lymphosarcoma and hemangiosarcoma, and also more likely to develop joint problems such as hip dysplasia and damage to the cranial cruciate ligament. The team later published data on German Shepherd Dogs and Labrador Retrievers, finding that early spaying and neutering had varying effects on these dogs’ likelihood to develop joint disorders, cancers, and urinary incontinence.
https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0055937
"There were no cases of MCT mast cell tumor in intact females, but the occurrence was nearly 6 percent in late-neutered females." That's pretty serious, and that is just one condition that was studied. Zero cases in the non spayed.
A scientific analysis published in Veterinary and Comparative Oncology using Golden Retriever Lifetime Study data notes a potential correlation between canine sterilization and hemangiosarcoma development.
Hemangiosarcoma is the most common cancer diagnosed in the Golden Retriever Lifetime Study cohort. It is a particularly deadly cancer, with roughly 90% of dogs dead within one year of diagnosis. Few dogs survive longer than two years, even with aggressive therapy.
https://phys.org/news/2023-11-golden-lifetime-uncovers-potential-sterilization.html
Thank you.