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Question DetailsAsked on 5/6/2011

Does wet cat food cause hypothyroidism?

A study done in 2004 showed a strong correlation between some brands of wet cat food in pop-top cans and hyperthyroidism. Apparently, some cans are lined with bisphenol A-diglycidyl ether, which reacts with the oils in the cat food. Years ago, when pet food cans had to be opened with a can opener, this disease was almost unheard of. It usually comes on at about age 13. I can only wonder about the effects of human foods in these pop-top cans.

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5 Answers


IMHO the only safe thing is to be vigilant and careful in whatever you put in your mouth and swallow. Example: I never use the plastic container to heat stuff in a microwave - I always put the food in a glass Pyrex dish to heat. Same with cans. Take the food out of the can as soon as it's opened. Put it in a glass jar (peanut butter jars are great for this) and keep it that way. You even could heat the food in a microwave proof glass container and then refrigerate it. Serve it to the cat/animal that way. Not sure this is perfect, but it's a good start.

Answered 9 years ago by PennsyNut


Once again you're making statements with no documentation to support your claims.
Unless you can direct me to something concrete, I am not going to take this seriously.

Answered 9 years ago by catnip


I have a male Maine Coon and he only gets dry - nothing more.[:)]

Answered 9 years ago by persephone16


My cat of about 14 got this disease, and the vet said it was more prevalent on the East coast (I lived in Penn.). She took a pill everyday of her life from that day forward, and lived to 18. I wonder now about the canned cat foods also. I have changed from feeding them only moist catfoods, to Wellness brand dry food (mostly vegetarian fruits, vegetables and grains) all the time, with a small (fancy feast) half can per day. only time will tell how this pans out!

Answered 9 years ago by ejfandtsf


Edinboro C, Scott-Moncrieff C, Tetrick M, Glickman L.
School of Veterinary Medicine, Purdue University, West Lafayette, IN, USA
PURPOSE: The prevalence of hyperthyroidism in pet cats (benign nodular hyperplasia) has reached epidemic proportions, since it was first described in 1979. Therefore, we tested the hypothesis that consumption of canned foods compared with dry foods increases the risk of hyperthyroidism. Furthermore, the risk associated with lower iodine concentrations in canned foods and chemicals in can linings was evaluated. Secondary hypotheses were that hyperthyroid risk is increased by well water consumption and exposure to environmental endocrine disrupters.METHODS: Case cats (n = 109) had serum T4 concentration >/=5.0 &mgr;g/dl and >/=1 clinical sign of hyperthyroidism; control cats (n = 173) had a serum T4 concentration /=50% canned: OR = 3.45, 95% CI: 1.77, 6.74; <50% canned: OR = 2.84, 95% CI: 1.48, 5.46). Other significant risk factors were use of cans with easy-open lids (vs. dry) (OR = 3.79, 95% CI: 1.68, 8.54), foods without iodine supplementation in any life stage (OR = 4.09, 95% CI: 1.09, 15.40), years of well water consumption (OR = 1.12, 95% CI: 1.02, 1.23), years of exposure to gas fireplaces (OR = 1.16, 95% CI: 1.02, 1.31), age (OR = 1.15, 95% CI: 1.03, 1.29), and female gender (OR = 2.73, 95% CI: 1.38, 5.43).CONCLUSIONS: Endocrine disrupters in food can linings and the environment may explain the recent epidemic of hyperthyroidism in cats, since easy-open cans have gained popularity. This same relationship should also be evaluated in humans.

Answered 9 years ago by aircarl

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