Dogs may help detect lung cancer

August 19, 2011 8:40:14 AM PDT
Man's best friend could be on the cutting edge of cancer detection research.

Researchers in Toronto are looking into how dogs may be able to sniff out lung cancer in humans.

Using hundreds of breath samples, the study showed dogs were able to smell lung cancer cases seven out of 10 times. It didn't matter if test patients had recently smoked or eaten.

A dog's nose has about 220 million odor detectors, while humans have about 5 million.