2. Lung Cancer

Halitosis could also be caused by lung cancer. Currently, pathologists use methods like biopsies and ultrasound scans to diagnose lung cancer, but we may soon be looking towards nanoarray analysis and breath tests. These are certainly cheaper, easier, and more noninvasive!

A study conducted at the University of Latvia tested the breath of 475 people. Of this group, there were 252 lung cancer patients, and 223 of those who had other lung conditions or no conditions at all. Among them, 265 were smokers, 210 were not.

The researchers found that lung cancer was correctly identified in 128 nonsmokers, and misdiagnosed in 5. Similarly, it accurately diagnosed 114 smokers as having lung cancer, and misdiagnosed 5.