What type of cancers cause bad breath?

In addition to bad breath, everyone should be aware of other new symptoms that may be signs of oral, oropharyngeal (throat), or laryngeal cancer. A cough that won't go away or a feeling of a lump in the throat can also be warning signs of laryngeal cancer. As the tumor grows, it can cause pain, weight loss, bad breath, and choking on food. In some cases, a tumor in the larynx can make swallowing difficult.

Using a preprogrammed electronic nose, which detects different profiles of volatile organic compounds (VOCs) in exhaled breath, researchers from the University of Latvia examined breath samples from 475 subjects, including 252 patients with lung cancer, 223 patients with different lung conditions and healthy volunteers, 265 smokers and 210 non-smokers. While poor dental hygiene is the cause of most cases of halitosis, bad breath can sometimes indicate another underlying medical condition. Some people worry too much about their breath even though they have little or no smell in their mouths, while others have bad breath and don't know it. Because it's difficult to assess how your own breath smells, ask a close friend or family member to confirm your questions about bad breath.

Because it's difficult to assess how your own breath smells, ask a close friend or family member to confirm that you're concerned about bad breath.