Dry Versus Canned on my mind

(Victor M. Martinez) wrote in message ...
Allegra640 wrote:
Whats a girl to do?

I would change vets. He probably doesn't read the latest in research on
feline nutrition.

That might be. Some vets don't do feline nutrition, let alone read the latest.

But on one hand the following supports your notion while the following
following talks against, in a way, when it comes to cancer and hyperthyroidism:

TITL: An investigation into the effects of storage on the
diagnosis of crystalluria in cats.

AUTH: Sturgess C P; Hesford A; Owen H; Privett R

ORGA: Department of Clinical Veterinary Science, University of
Bristol, Langford, Bristol BS40 5DU, UK.

CITE: J Feline Med Surg 2001 Jun; 3 (2): 81-5

ABST: Urinalysis was performed on 41 cats with no history of
urinary tract disease. Samples were divided into aliquots, stored
under differing condition and then examined for the presence of
crystalluria. Crystalluria was detected in at least one stored
sample in 92% of cats fed a mixed wet/dry food diet compared to
24% in the fresh sample. Crystalluria was not detected in any
sample or aliquot from cats fed all wet food diets.
Copyright 2001 European Society of Feline Medicine.


But then, if one is concerned about cancer or hyperthyroidism:


TITL: Environmental and lifestyle risk factors for oral squamous
cell carcinoma in domestic cats. [In Process]

AUTH: Bertone Elizabeth R; Snyder Laura A; Moore Antony S

CITE: J Vet Intern Med 2003 Jul-Aug; 17 (4): 557-62

ABST: Oral squamous cell carcinoma (SCC) is a common malignancy
in cats, but little currently is known about its etiology. We
examined the relationship between risk of oral SCC and factors
such as environmental tobacco smoke, flea control products, and
diet in 36 domestic cats with histologically confirmed oral SCC
and 112 renal disease control cats presented to a large
veterinary referral hospital between 1994 and 2000.
Questionnaires were mailed to owners of all study and control
cats to assess demographic characteristics, lifestyle factors,
and level of chemical exposures 2 years before diagnosis.
Multivariate relative risks (RR) were used to estimate the
relationships between the various factors and the risk of oral
SCC. Flea control product use and diet were significantly
associated with risk of oral SCC. Cats that wore a flea collar
had 5 times the risk of oral SCC as nonusers, after adjustment
for other factors (RR = 5.3; P = .002). In contrast, use of flea
shampoo substantially reduced risk. Compared to cats eating
mostly dry food, those with high canned food intake had a 3-fold
increase in risk (RR = 3.6; P = .014); canned tuna fish intake
was independently associated with risk (RR = 4.7; P = .004).
Exposure to household environmental tobacco smoke was associated
with a nonsignificant 2-fold increase in risk (P = .11). Results
of this study suggest that flea control products, diet, and
perhaps environmental tobacco smoke might be associated with risk
of oral SCC and indicate that further investigation into these
relationships is ...


developing hyperthyroidism. Compared with cats that did not eat
canned food, those that ate commercially prepared canned food had
an approximate 2-fold increase in risk of disease. When these 4
variables (breed, use of cat litter, consumption of canned cat
food, and use of topical ectoparasite preparations) from the
univariate analysis were selected for further study as candidate
risk factors and analyzed by multivariate conditional logistic
regression, a persistent protective effect of breed (ie, Siamese
or Himalayan) was found. In addition, results suggested a 2- to
3-fold increase in risk of developing hyperthyroidism among cats
eating a diet composed mostly of canned cat food and a 3-fold
increase in risk among those using cat litter. ??? In contrast, the
use of commercial flea products did not retain a strong
association. The results of this study indicate that further
research into dietary and other potentially important
environmental factors (eg, cat litter) is warranted.


Now what's a guy gonna do? The dry food is mostly not so hot,
carbs, corn gluten meal or rice or whatever and can cause
the water problem from lack of water.

On the other hand, the canned food, unless it is a SPURIOUS
connection, is associated with some serious stuff too,
hyperthyroidism or cancer. cat litter??? must be spurious,
probably soft life style or something.

Makes a little sense since a meat diet has been associated
with cancer in humans. But cats have a quick digestive system
will fresh kill, don't know about canned food.

I suspect it is caloric restriction that will end the problem
in the end, at least the last 20 years of science seem to
point that way.

Or, or, or a glass of New York red wine freshly opened.
reservatrols? sp? (nothing to do with trolls

Now what do you say?

Tree Line wrote:
But on one hand the following supports your notion while the following
following talks against, in a way, when it comes to cancer and hyperthyroidism:

Not really, see the conclusion:

association. The results of this study indicate that further
research into dietary and other potentially important
environmental factors (eg, cat litter) is warranted.

This basically means that they acknowledge their results are not precise
and more study is needed. Statistical analysis is a tricky science that
is easily manipulatable to get whatever results you want...


--
Victor M. Martinez

http://www.che.utexas.edu/~martiv