Dr dog

A japanese team make series of expirements with labrador retriever's and they prove that this dogs can smell when people have cancer even in its early stages.

They said that some dogs have a special sense to smell chemicals changes in the body of people who have cancer, the finding builds on previous experimens with dogs smelling people who have cancer in the skin, lungs, bladder and ovaries.

A report in the journal Glut describe how the researches trained a eight-year-old dog to distinguish between two patients, one with colonrectal cancer and the another healthy. The dog distinguish the cancer only with a sample of their breath. Also in others tests the dog correctly identified 33 of 36 people with bowel cancer smelling their breath and identified 37 o 38 cases sniffing stools of the patients.

With this results they expected knows more about the aromatic chemicals in the body with cancer that betray the disease. But Nell Barrie, science information officer at Cancer Research, said: "Although some dogs seem to be able to smell cancer in certain situations, we're still a long way from understanding exactly what they are detecting and this small study in one dog doesn't give us any new clues."

http://www.guardian.co.uk/science/2011/jan/31/dogs-sniff-out-bowel-cancer

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