Exhale Your Way To Better Heatlh

From The New Scientist:

A simple breath test can sometimes detect lung cancer in patients – even those in the early stages of the disease – US researchers reported on Sunday.

The researchers developed a compact device that correctly diagnosed three-quarters of lung cancer patients in trials involving 122 people with different types of respiratory disease. The sample included 49 people with lung cancer and 21 healthy controls. However, the test also wrongly diagnosed many people with lung cancer when they did not have the disease.

The researchers say a more accurate test may be possible in principle. "The unique chemical signature of the breath of patients with lung cancer can be detected with moderate accuracy by a [colour-producing] sensor array," the researchers write.

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