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Dogs Trained to Detect Bladder Cancer by Sniffing Urine Dogs Trained to Detect Bladder Cancer by Sniffing Urine

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Unread 10-17-2004, 05:46 AM
Dogs Trained to Detect Bladder Cancer by Sniffing Urine

I found this extremely, extremely interesting. Of course, being the dog lover that I am, I cannot say that I am surprised by this!

Dogs Trained to Detect Bladder Cancer by Sniffing Urine

Researchers from the UK have apparently trained dogs to recognize urine samples from patients with bladder cancer. The details of this report appeared in the September 25, 2004 issue of the British Medical Journal .

Dogs are known to have a sense of smell that is magnitudes greater than that of humans. In this experiment, 6 dogs of different breeds were trained to recognize urine samples from patients with bladder cancer compared to controls. These dogs were able to recognize urine from bladder cancer patients 41% of the time, rather than the predicted by chance figure of 14%. In one instance, a control urine sample was consistently identified by the dogs as a cancer case and this person who was a “normal control” was ultimately found to have a kidney carcinoma. These authors concluded that “Our study provides the first piece of experimental evidence to show that dogs can detect cancer by olfactory means more successfully than would be expected by chance alone. The results we achieved should provide a benchmark against which future studies can be compared, and we hope that our approach to training may assist others engaged in similar work.”

Comments: This study was funded locally and by private charities. This approach would probably not impress governmental funding agencies.

Reference: Willis CM, Church SM, Guest CM, et al. Olfactory detection of human bladder cancer by dogs: proof of principle study. British Medical Journal. 2004;329:715-720.

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Unread 10-17-2004, 07:26 AM
Dogs Trained to Detect Bladder Cancer by Sniffing Urine

Hi K9,

Where in the world do you find these things???? LOL LOL

Yes, it really is very interesting and makes you think.

Keep searching.

Unread 10-18-2004, 04:02 AM
Dogs Trained to Detect Bladder Cancer by Sniffing Urine


As a dog lover myself, thanks for sharing that interesting information. I saw a show a few years back where two dogs were trained to detect skin cancers. It was quite interesting. But none of this suprises me. I studied aromatherapy for a number of years, and the process of scent is quite amazing. Having been a nurse for more years than I want to admit to, when I was working in the ER I could smell patients with GI bleeds, diabetic ketoacidosis, and UTI's a mile away. Dogs on the other hand whose scenting abilty is 100,000 time greater than humans, I can only imagine the diseases they could be trained to scent out long before any obvious symptoms manifest. Maybe this is the real reason why these incredible animals are called Mans/Womens best friends!!!
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Unread 10-18-2004, 04:53 PM
Dogs Trained to Detect Bladder Cancer by Sniffing Urine

I believe dogs sniffing urine for cancer was in the network news (or maybe it was CBS' "Sunday Morning" program) a few weeks ago. Even described how they're being trained for it.

Mary D.
Unread 10-19-2004, 10:29 AM
Dogs Trained to Detect Bladder Cancer by Sniffing Urine

My doctor said that they've known for a long time that dogs can smell melanoma. :-)

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