To Neuter or Not to Neuter?
I have a headache. I just read an article entitled "Neutering Dogs: Effects on Joint Disorders and Cancers in Golden Retrievers." It was well-written, did an admirable job of summarizing previously relevant research, and reported some important findings. Why then, you might be wondering, did it give me a headache? Well, it reported a significant increase in some important diseases in neutered dogs (males and females) in comparison to intact individuals, but didn't talk about the potential benefits of the surgeries.
Evidence of a relationship between neutering and an increased risk of certain diseases has been mounting over the years, so although some of the details revealed in this study are new, the overall message is not. And before you ask, the message is not "do not neuter your dog," it is "like all medical procedures, neutering has risks and benefits that owners need to be aware of."
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This current study is open access so you can look at it on your own for all the details, but to summarize:
"Veterinary hospital records of 759 client-owned, intact and neutered female and male dogs, 1–8 years old, were examined for diagnoses of hip dysplasia (HD), cranial cruciate ligament tear (CCL), lymphosarcoma (LSA), hemangiosarcoma (HSA), and mast cell tumor (MCT). Patients were classified as intact, or neutered early (<12 mo) or late (≥12 mo).
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The paper didn't go into much detail about the potential benefits of spaying and neutering dogs other than to reference other research that "found the evidence that neutering reduces the risk of mammary neoplasia to be weak." I'll have to look that one up; it doesn't really jive with my clinical experience. Every case of mammary cancer I can think of from my career has been in an intact female.
--getting rid of heat cycles,
--eliminating the dangers associated with whelping
--preventing potentially fatal uterine infections (pyometra)
--eliminating the chance of ovarian or testicular cancer
--significantly reducing the risk of prostatic hyperplasia and infection
--lessening aggression and other unwanted behaviors like mounting, roaming, and marking
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The authors of this paper cite the differences between policies in the U.S. that promote early age spay/neuter and other developed countries where intact pets are the norm, but fails to mention the much stricter regulations surrounding pet ownership and breeding that are in effect in many of those same countries.
So feel free to look at the paper to learn about some of the downsides of spaying and neutering dogs, but do not turn to it for a balanced argument for or against the procedure. Only you, in conversation with your veterinarian, can determine what is right for your pet.