Nav: Home

Timing of spay, neuter tied to higher risk of obesity and orthopedic injuries in dogs

July 17, 2019

Spaying or neutering large-breed dogs can put them at a higher risk for obesity and, if done when the dog is young, nontraumatic orthopedic injuries, reports a new study based on data from the Morris Animal Foundation Golden Retriever Lifetime Study. The spay/neuter study was published today in the journal PLOS ONE.

"For years, we've been taught that spaying or neutering your dog is part of being a responsible pet owner, but there really are advantages and disadvantages to consider when making that decision," said Dr. Missy Simpson, Morris Animal Foundation epidemiologist and lead author on the paper. "Our study results give dog owners and veterinarians new information to consider when deciding on when to spay or neuter their dog, especially when considering the long-term health of their pet."

In the general canine population, estimates are that one-third to one-half of all large-breed dogs are either overweight or obese. Roughly 2% of the same population suffer nontraumatic orthopedic injuries, such as cruciate ligament ruptures.

Dr. Simpson studied health data, collected over six years, from the entire Golden Retriever Lifetime Study cohort of more than 3,000 golden retrievers. Approximately one-half had undergone spay or neuter surgery.

She found that dogs that were spayed or neutered were 50% to 100% more likely to become overweight or obese, and the risk didn't appear to be affected by the dog's age at the time of surgery. Whether the dog had the procedure at 6 months or 6 years, the risk of weight gain remained relatively constant.

However, age at surgery does appear to be a significant factor regarding nontraumatic orthopedic injuries. Dr. Simpson found that dogs spayed or neutered before 6 months of age were at a 300% greater risk of sustaining those injuries.

While the paper focused on golden retrievers, Dr. Simpson noted the results likely can be applied to other breeds particularly other large- and giant-breed dogs.

"Different owners have different concerns for their dogs and the decision to spay or neuter your dog is a very complex one," said Dr. Janet Patterson-Kane, Morris Animal Foundation Chief Scientific Officer. "It's a balance in managing the risks of neutering or not neutering for owners committed to their dog's health."

The Morris Animal Foundation Golden Retriever Lifetime Study is the most extensive, prospective study ever undertaken in veterinary medicine. Launched in 2012, and reaching full enrollment in 2015, it gathers information on more than 3,000 golden retrievers from around the United States, throughout their lives, to identify the nutritional, environmental, lifestyle and genetic risk factors for cancer and other diseases in dogs.

Owners and veterinarians complete yearly online questionnaires about the health status and lifestyle of the dogs. Biological samples also are collected, and each dog has a physical study examination annually.
-end-
The Morris Animal Foundation Golden Retriever Lifetime Study is funded in part by the Mark and Bette Morris Family Foundation, Petco Foundation, Blue Buffalo Company, Mars Veterinary Inc., ANTECH Diagnostics and Imaging, VCA Inc., Zoetis, Golden Retriever Foundation, and the Hadley and Marion Stewart Foundation.

About Morris Animal Foundation

Morris Animal Foundation's mission is to bridge science and resources to advance the health of animals. Founded by a veterinarian in 1948, we fund and conduct critical health studies for the benefit of all animals. Learn more at morrisanimalfoundation.org.

Morris Animal Foundation

Related Obesity Articles:

Should obesity be recognized as a disease?
With obesity now affecting almost a third (29%) of the population in England, and expected to rise to 35% by 2030, should we now recognize it as a disease?
Is obesity associated with risk of pediatric MS?
A single-center study of 453 children in Germany with multiple sclerosis (MS) investigated the association of obesity with pediatric MS risk and with the response of first-line therapy in children with MS.
Women with obesity prior to conception are more likely to have children with obesity
A systematic review and meta-analysis identified significantly increased odds of child obesity when mothers have obesity before conception, according to a study published June 11, 2019 in the open-access journal PLOS Medicine by Nicola Heslehurst of Newcastle University in the UK, and colleagues.
Obesity medicine association announces major updates to its adult obesity algorithm
The Obesity Medicine Association (OMA) announced the immediate availability of the 2019 OMA Adult Obesity Algorithm, with new information for clinicians including the relationship between Obesity and Cardiovascular Disease, Diabetes Mellitus, Dyslipidemia, and Cancer; information on investigational Anti-Obesity Pharmacotherapy; treatments for Lipodystrophy; and Pharmacokinetics and Obesity.
Systematic review shows risk of a child developing overweight or obesity is more than trebled by maternal obesity prior to pregnancy
New research presented at this year's European Congress on Obesity (ECO) in Glasgow, Scotland (April 28- May 1) reveals that the risk of a child becoming overweight or obese is more than trebled by maternal obesity prior to getting pregnant.
More Obesity News and Obesity Current Events

Best Science Podcasts 2019

We have hand picked the best science podcasts for 2019. Sit back and enjoy new science podcasts updated daily from your favorite science news services and scientists.
Now Playing: TED Radio Hour

Erasing The Stigma
Many of us either cope with mental illness or know someone who does. But we still have a hard time talking about it. This hour, TED speakers explore ways to push past — and even erase — the stigma. Guests include musician and comedian Jordan Raskopoulos, neuroscientist and psychiatrist Thomas Insel, psychiatrist Dixon Chibanda, anxiety and depression researcher Olivia Remes, and entrepreneur Sangu Delle.
Now Playing: Science for the People

#537 Science Journalism, Hold the Hype
Everyone's seen a piece of science getting over-exaggerated in the media. Most people would be quick to blame journalists and big media for getting in wrong. In many cases, you'd be right. But there's other sources of hype in science journalism. and one of them can be found in the humble, and little-known press release. We're talking with Chris Chambers about doing science about science journalism, and where the hype creeps in. Related links: The association between exaggeration in health related science news and academic press releases: retrospective observational study Claims of causality in health news: a randomised trial This...