What may cause bad breath?

Morning time – Saliva flow almost stops during sleep and its reduced cleansing action allows bacteria to grow, causing bad breath. Certain foods – Garlic, onions, etc. Foods containing odour-causing compounds enter the bloodstream; they are transferred to the lungs, where they are exhaled.

  • Poor Oral Hygiene Habits – Food particles remaining in the mouth promote bacterial growth.
  • Periodontal (Gum) Disease – Colonies of bacteria and food debris residing under inflamed gums.
  • Dental Cavities and Improperly Fitted Dental Appliances – May also contribute to bad breath.
  • Dry Mouth (Xerostomia) – May be caused by certain medications, salivary gland problems, or continuous mouth breathing.
  • Tobacco Products – Dry the mouth, causing bad breath.
  • Dieting – Certain chemicals called ketones are released in the breath as the body burns fat.
  • Dehydration, Hunger, and Missed Meals – Drinking water and chewing food increases saliva flow and washes bacteria away.
  • Certain Medical Conditions and Illnesses – Diabetes, liver and kidney problems, chronic sinus infections, bronchitis, and pneumonia are several conditions that may contribute to bad breath.

Keeping a record of what you eat may help identify the cause of bad breath. Also, review your current medications, recent surgeries, or illnesses with your dentist.


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