SmileScoutBad breath, or halitosis, is something almost everyone experiences occasionally — but persistent bad breath can be embarrassing and is often a sign that something needs attention. The most common cause is simply bacteria in the mouth breaking down food particles and releasing unpleasant-smelling gases, especially on the tongue and between the teeth.
Good daily habits solve most cases: brushing twice a day, cleaning between your teeth, gently brushing your tongue, staying hydrated, and cutting back on strong-smelling foods, tobacco, and excess coffee.
When bad breath lingers despite good hygiene, it can point to gum disease, tooth decay, dry mouth, or occasionally something beyond the mouth such as sinus problems. A dental check-up can pinpoint the cause and, in most cases, resolve it. Persistent bad breath isn't something to just mask with mints — it's worth getting to the root of.
References
Grounded in standard dental textbooks and professional guidance. These are general sources, not a substitute for an in-person exam.
- Greenberg MS, Glick M, Ship JA. Burket's Oral Medicine.
- Newman MG, Takei HH, Klokkevold PR, Carranza FA. Carranza's Clinical Periodontology.
This is general information written by a dentist, not personal medical advice. If you are in pain, swollen, or unsure, see a qualified dentist.