Autoimmune Thyroiditis and Canine Hypothyroidism
Hi board
I'm very pleased that JulieM responded to my post with information regarding these conditions as they relate to longevity.
You see, whereas we have our Cardiomyopathy, Valvular Stenoses and cancers as what see as the major causes of death in dogs in all reality they are not close to the top of the list.
The major cause of death in canines, worldwide, in the year 2000 was euthanasia. The average life expectancy of the modern dog is just 3.5 years. The major reason for euthansia is unwanted dogs. This is all breeds. Boxers included.
Dogs are usually unwanted due to real or imagined aberrant behaviour.
Why then is this relevant.
A visit to
http://www.canine-epilepsy-guardian-angels.com/behaviorandthyroid.htm will show some interesting studies done on the correlation between aberrant behaviour and Canine Hypothyroidism.
The study was done by leading US Vet Dr Jean W Dodds who is one of the worlds foremost authorities on CH and Canine Autoimmune Deficiency. I had the great pleasure to meet Dr Dodds when I attended a 3 day seminar given by her in Australia in 1998.
Anyway, the point is this. When you go to this site you are going to learn that very high percentages of dogs that have aberrant behaviours are also found to be hypothyroid. Aberrant behaviours include things like aggression, fearfulness, hyperactivity and/or
seizures
I put seizures in bold because the correlation between CH and seizures has shown to be extremely high!! And I know many members here that have dogs that have seizures. Those that do would be well advised to follow up on their dogs condition after reading the information on the given website
Anyway. These aberrant behaviours are only 1 of the manifestations of CH. Others are things like
* Reproductive disease:
decreased libido, prolonged inter-oestrus intervals, reduced fertility
* Cardiovascular disease:
reduced myocardial contractility which may be associated with development of cardiac changes similar to dilated cardiomyopathy.
* Other endocrine diseases:
Hypothyroidism in association with concurrent diabetes mellitus, or hypoadrenocorticism (Addisons Disease) is not uncommon
* Musculoskeletal disease:
Myopathies and generalised muscle weakness are common
This is not to mention the metabolic, neurologic and/or dermatologic conditions that also can occur in CH
Now the thing is that all these "diseases" are often diagnosed as stand alone ailments and treated as such, often with very poor results. Dogs have been put to sleep on many occasions due to "diseases" that seem incurable or untreatable. The irony of the whole thing though is that while each disease can be diagnosed and treated as a stand alone malady, they are also symptomatic of one much bigger disease........and that is Canine Hypothyroidism.
So at times I wonder if we get to barking up the wrong tree when we endeavour to find the best, most genotypically sound animals for breeding. When you consider that many of the conditions that can be related to or are attributable to CH one can easily imagine that while CH itself won't kill a dog, the symptoms of it can and do. Often some of the conditions above can become intractable (incurable) but at the same time they are easily treatable and curable in other individuals.
So we revisit JulieM's example of Demodex. Many dogs have been put to sleep because this has seen to be out of control, but I wonder if anyone really looked hard enough at the possible underlying cause.
I don't think it's unfeasable to accept the possibility that Canine Hypothyroidism, or rather it's "by products" is indirectly a bigger killer than the diseases we know are potentially fatal.
It's especially interesting to note the passage I marked in bold as to Cardiomyopathy!!
Matthew
P.S. I agree 1000% with JulieM on the subject of over-vaccination. The principles of vaccination are the same for any mammal, yet we thrust yearly vaccs. on our dogs when we can make do with a lifetime immunity from one shot. Seems very illogical.
A parting thought on this.
Why does a 6 week old Great Dane puppy have the exact same dose of the exact same vaccination as a 6 week old Chihauhua puppy????? Someone is getting too little or too much perhaps
Matthew