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New Study – Extend Your Dog’s Lifespan by over 30%
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New Study – Extend Your Dog’s Lifespan by over 30%

Extend Your Dog’s Lifespan by over 30%!

A study conducted at the Gerald P. Murphy Cancer Foundation and published in the December, 2009 issue of Aging Cell, has found a correlation between the age at which female rottweilers are spayed and their lifespan.The study compared long-lived female rotties (those with a lifespan of 13 or more years) with a group who lived a usual lifespan of about nine years.

“Like women, female dogs in our study had a distinct survival advantage over males,” said the lead researcher David J. Waters, associate director of Purdue University’s Center on Aging and the Life Course and a professor in the Department of Clinical Sciences. “But taking away ovaries during the first four years of life completely erased the female survival advantage. We found that female rottweilers that kept their ovaries for at least six years were four times more likely to reach exceptional longevity compared to females who had the shortest lifetime ovary exposure.”

Because death from cancer is so prevalent in rottweilers, researchers conducted a subgroup analysis of only dogs that did not die of cancer. This focused research further proved the strong association between intact ovaries and longevity.

Even in dogs that did not die of cancer, the female rotties that kept their ovaries the longest were nine times more likely to achieve exceptional longevity (13+ years).

Simply put, this study’s results indicate that the removal of a female dog’s ovaries significantly increases the risk for a major lethal disease!

Interestingly, the rottweiler research lines up with findings from another recent study of women who had undergone hysterectomies. In that study, women who lost their ovaries prior to age 50 were at greater risk of death by causes other than breast, ovarian and uterine cancer than women who kept their ovaries until age 50.



Aging Cell, December 2009

Gerald P. Murphy Cancer Foundation


Health Problems Associated with Gonad Removal
Common sense tells us, and research proves there are a number of health benefits associated with the sex hormones (estrogen, progesterone, testosterone) produced by ovaries and testicles. These advantages vary with the age, gender and breed of each animal.

Halting production of these hormones through spaying and neutering has been found to increase the risk of certain specific diseases and conditions in dogs.

Adverse reactions of Spayed Females:
- Increased aggression in altered females. (recent study)
- Increased occurrence of urinary calculi.
- Increased difficulty passing urinary calculi.
- Increased likelihood of vulvar pyoderma (urine scald)
- Increased likelihood of urinary incontinence.
- Increased likelihood of adverse reaction to vaccinations (27-38%).
- Increased risk of Hemangiosarcoma, a highly malignant form of cancer
- Osteosarcoma (bone cancer)
- Transitional cell carcinoma (bladder cancer)
- Autoimmune thyroiditis and hypothyroidism
- Endocrine dysfunction, adrenal disease
- Notable decrease of activity/drive. (this is important to those whose animals aren’t just pets but are trained to do work or performance too)
- Increased chance of “perpetual puppy syndrome” undesirable urination.
- Inhibited social adjustment if spayed prior to complete cognitive development (usually a while AFTER sexual maturity).
- Substantial likelihood of appreciable demeanor change after spay (menopausal women know about hormone drop.. it’s not fun)
- Increased likelihood of cognitive disorders if spayed before sexual maturity.
- Increased likelihood of, or speeded progress of, degenerative osteological disorders.
- Notable decrease in muscle mass (again, not all dogs are lawn ornaments or carpet speedbumps)
- Generally live 2 (or more) years LESS than unaltered littermates in controlled studies.

Altered Males:
- Increased occurrence of urinary calculi.
- Increased difficulty passing urinary calculi.
- Increased chance of urinary obstruction.
- Increased likelihood of urinary incontinence.
- Increased likelihood of adverse reaction to vaccinations (27-38%).
- Increased risk of Hemangiosarcoma, a highly malignant form of cancer
- Osteosarcoma (bone cancer)
- Transitional cell carcinoma (bladder cancer)
- Prostatic cancer
- Autoimmune thyroiditis and hypothyroidism
- Endocrine dysfunction, adrenal disease
- Notable decrease in activity/drive. (same as above in female list)
- Increased chance of “perpetual puppy syndrome” undesirable urination.
- Inhibited social adjustment if castrated prior to sexual maturity.
- Substantial likelihood of appreciable demeanor change after castration (same concept as above in female list… )
Remember, reproductive hormones affect more than just reproduction
- Increased likelihood of cognitive disorders if castrated before complete cognitive development (usually a good time AFTER sexual maturity as in females stated above).
- Notable decrease in muscle mass (yep, same as above)
- Generally live 2 (or more) years LESS than unaltered littermates in controlled studies

Sterilization decisions should be a part of an informed, holistic approach to your pet’s gealth and quality of Life and the decision to neuter or not is and should remain YOURS.

Be informed, be responsible!
Not neutering does not give you the license to breed your dog. Be responsible! Leave breeding to true breed preservationists such as Certified Natural Rearing Breeders or at the very least, breeders who keep their dogs current all health testing pertinent to their specific breed. Talk with natural rearing breeders and other experienced dog owners, and consult a veterinary naturopath or a true holistic veterinarian to understand what steps you can take to insure the overall health and longevity of your pet.

If you have a puppy or even an adult dog that is intact and you are considering a spay/neuter decision, I encourage you to please research and continue to learn all you can about surgical sterilization options and the risks associated with the procedures.

In a tubal ligation, the oviducts are cut and tied off, preventing ova from getting to the uterus or coming in contact with sperm. Tubal ligation does NOT shut off hormone production, so your dog will continue to go into heat and can mate with male dogs, but no pregnancy will result.

Dogs having had a vasectomy are still able to breed with a female but will not produce sperm to get her pregnant.

If you should decide for a tubal ligation, vasectomy, spaying or casteration is best for you and your dog, make sure that your dog is mature and healthy enough to be considered balanced both physically and mentally. Generally speaking, maturity is not achieved until a dog has reached at least one year of age. Keep in mind that giant breed dogs are still developing at 2 years of age and should not be considered canidates for the loss of hormones until at least two.

Links to learn more: these links all ahve 1 -rmore articles or studies about spay or nueter
Spay-Neuter References
Companion Animals as Targets of Impolite Human Comments
Long-Term Health Effects of Spay-Neuter in Dogs
Determining the Best Age At Which to Spay or Neuter: An Evidence-Based Analysis
Spay/Neuter question
Spaying/Neutering Being Promoted As A Replacement For Training & Responsibility



Another vets opion here- I have heard this from many vets now, but this is the first who has put it on a websight for many to see..

A snipit of the statement : But with time, I began to realize that many of the reasons given for this surgery were not based on science or the long-term welfare of our individual pets. Years of observing pets in my practice led me realize that many of the problems I was treating could be traced back to the pets being surgically neutered or neutered too young.

This study- vets like to hide, but it is published in their own journel- vaccination reactions- corrispond with a weakened immune system- people and dogs need hormones for a strong immune system


Journal of the American Veterinary Medical Association
October 1, 2005, Vol. 227, No. 7, Pages 1102-1108
doi: 10.2460/javma.2005.227.1102

Adverse events diagnosed within three days of vaccine administration in dogs
George E. Moore, DVM, MS, PhD, DACVPM, DACVIM Lynn F. Guptill, DVM, PhD, DACVIM Michael P. Ward, BVSc, MS, MPVM, PhD Nita W. Glickman, MPH, PhD Karen K. Faunt, DVM, DACVIM Hugh B. Lewis, BVMS, DACVP Lawrence T. Glickman, VMD, DrPH
Department of Veterinary Pathobiology, School of Veterinary Medicine, Purdue University, West Lafayette, IN 47907-2027. (Moore, Ward, Glickman, Glickman); Department of Veterinary Clinical Sciences, School of Veterinary Medicine, Purdue University, West Lafayette, IN 47907-2027. (Guptill); Present address is the Department of Veterinary Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX 77843-4458. (Ward); Banfield, The Pet Hospital, 11815 NE Glenn Widing Dr, Portland, OR 97220. (Faunt, Lewis)
Objective—To determine incidence rates and potential risk factors for vaccine-associated adverse events (VAAEs) diagnosed within 3 days of administration in dogs.

Design—Retrospective cohort study.

Animals—1,226,159 dogs vaccinated at 360 veterinary hospitals.

Procedure—Electronic records from January 1, 2002, through December 31, 2003, were searched for possible VAAEs (nonspecific vaccine reaction, allergic reaction, urticaria, or anaphylaxis) diagnosed within 3 days of vaccine administration. Information included age, weight, sex, neuter status, and breed. Specific clinical signs and treatments were reviewed in a random sample of 400 affected dogs. The association between potential risk factors and a VAAE was estimated by use of multivariate logistic regression.

Results—4,678 adverse events (38.2/10,000 dogs vaccinated) were associated with administration of 3,439,576 doses of vaccine to 1,226,159 dogs. The VAAE rate decreased significantly as body weight increased. Risk was 27% to 38% greater for neutered versus sexually intact dogs and 35% to 64% greater for dogs approximately 1 to 3 years old versus 2 to 9 months old. The risk of a VAAE significantly increased as the number of vaccine doses administered per office visit increased; each additional vaccine significantly increased risk of an adverse event by 27% in dogs ≤ 10 kg (22 lb) and 12% in dogs > 10 kg.

Conclusions and Clinical Relevance—Young adult small-breed neutered dogs that received multiple vaccines per office visit were at greatest risk of a VAAE within 72 hours after vaccination. These factors should be considered in risk assessment and risk communication with clients regarding vaccination. (J Am Vet Med Assoc 2005;227:1102–1108)

dog article on what is done in europe- they never spay or of they do it's very late

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Canine Voice
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The Neuter Controversy
Not really controversial in North America. In the eye of society at large and propagated by most dog pros only "serious" breeders, the ones that drag their pooches from one canine beauty contest to the next, should decide who does and doesn't mate.
Neutering is much less popular in Europe - and Western Europe does not have any more dog problems than North America, including behavior problems and pet overpopulation.

Hailed by humane societies as the solution to pet overpopulation, every surrendered and found stray mutt and purebred pooch is neutered. Including babies. I volunteered for a humane society that did not release a young male pup to his wonderful new parents, who had already signed him up for puppy classes, because his testicles didn't decent and he couldn't be neutered. So he sat in his run by himself during his most impressionable puppy weeks, instead of being in his home and learn things.
My suggestion to deal with overpopulation. Legislative changes that prohibits dogs being sold in pet stores, newspapers, parking lots and on e-bay. Large kennel breeders and puppy mills should be illegal. That is where overpopulation originates. People who breed for profit won't neuter.

Neutering as cancer prevention? Hm, let me see. The cancer rate in dogs is 43%, in some breeds higher. Most are neutered. Yes, a spayed female or castrated male can't get mammary or testicular cancer, but neutering does nothing to prevent all other forms, and might even increase the risk for some forms of cancer, for example bone cancer. Folks concerned about cancer should focus their attention to the gene pool, crappy food and our obsession with pest and insect free lawns and environments.
We are aware of the integral part sexual hormones have on human health. Think about menopause, menstrual cycles, puberty and andropause. How can we possibly believe that cutting such an important part of a dog's body out or off would contribute to homeostasis?

Neutering as a training tool? I work professionally with dogs since '95. Most of my clients' dogs are neutered. Most dogs that were surrendered to the humane societies I volunteered for had behavior problems. Most were neutered. Dogs have problems because they are bred and placed inappropriately, under socialized or socialized the wrong way, under or over stimulated, trained with alpha methods that teach aggression. With the exception of roaming and inter male aggression, castration does not solve behavior problems. And, female hormones are calming, which means a cranky female might even become more irritable if spayed.
The book "Stress in Dogs" (info on my book-list page at www.dogsensecommunications.com) indicates, based on a study, that intact dogs were less stressed than neutered ones. Which makes sense considering that the adrenal gland hormones interact with both the immune system and sexual hormones. Sexual glands and adrenal glands have a feedback loop to the control station - the pituitary gland. Eliminating sexual hormones has to affect the pituitary and adrenal glands and with it the balance of stress hormones and possibly the immune system - which plays a role in cancer.

Breed standards are made by humans, not dogs. Breeders decide who mates with whom based on their science. They have non-breeding contracts because the last thing they want is competition. That'll be the day I pay several thousand dollars for a dog and be told that I have to fix him/her. Some breeders completely disregard how the dog feels about mating; don't heed to signals a female gives that she refuses that particular male, or refuses to mate altogether. They disregard the knowledge the female has of her own body or what she sees in the male's subtle body language, or pheromones that tell her that he wouldn't be suitable to father a healthy and temperamentally sound litter. The breeder decides, and the female is either held and raped, or artificially inseminated.
The amount of congenital diseases and strung out dogs is proof that many "serious" breeders do not know better than nature.

Meanwhile we castrate and spay thousands of dogs deemed by humans not good enough to procreate. We are killing a whole species; a healthy and sound gene pool, in North America.
If we continue, what will be left in North America in 25 years? Only sickly, but beautiful looking dogs? Breeders already import purebreds to increase the gene pool. In a few decades we have to import healthy mutts as well.

Posted by Canine Voice at May 4, 2008 6:33 a.m.
Posted by unregistered user at 1/13/2010 10:02 p.m.

Thank you so much for this article! I am originally from EU, but have been living in the US for a couple of years now and have experienced a lot of frustration with shelters (and even individuals') attempts to impose neutering or make it nearly mandatory, while my own human, female self tells me this is, simply, unnatural and thus, subject to question. Equally importantly, I consider it absolutely normal, and actually necessary, as a pet owner to be fully responsible for the consequences of my pet becoming pregnant - if there won't be caring owners for the litter, it is only natural that one thinks twice (or as many times as necessary) before allowing their pet to procreate at their own rate. So far, my opinions have been largely dismissed, and everybody has been trying to convince me (indirectly) how I should feel responsible to save the thousands of pets being eutanized every month, by spaying mine, which will still not reduce the numbers of animals what are being abandoned by their owners, for all kinds of reasons. I believe we should all learn how to be responsible in our actions before taking it out on pets, who are the most innocent actors in the entire equation. Once again, thank you for your article, I wish your words could reach a larger part of the population and make them just see another perspective



tubiligation and vacectomy instead