About 90% of breath problems are caused from a proliferation of specific types of gram (-) anaerobic bacteria in the mouth. This has also been supported by extensive research in the field of halitosis. This proliferation is often a result of conditions such as allergies, sinus congestion or post-nasal drips, nasal polyps, and xerostomia which is a dry mouth condition. A common area where the bacteria congregates can actually be on the tongue itself. Because we rarely find halitosis resulting from a medical condition, we suggest that the first approach in eliminating the problem of bad breath should be an oral approach. This approach is more economical, noninvasive, and it has a higher probability of success. We do recommend that all patients with bad breath maintain their dental health by seeing their dentist regularly. Should a halitosis condition persist, despite the simple and noninvasive oral treatments that we offer, then we suggest that those patients who continue to have bad breath should see their physician. Usually from the differential diagnosis that we perform at the first appointment, we can determine whether a halitosis problem is of a medical or dental origin.