Diseases & Conditions

Man's best friend — and medicine's too?

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Dogs may one day help identify certain health conditions early.

For as long as dogs have been domesticated, humans have relied on them for companionship and their remarkable sense of smell. Dogs and their super sniffers help humans hunt; track criminals; and detect guns, drugs, or explosives in airports. Now scientists are investigating whether dogs can also help sniff out diseases before humans know they have them.

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