Most adults suffer from bad breath otherwise known as halitosis at some point in their lives.

Oral Causes

  • Dental decay.
  • Gum disease.
  • Food stagnation between the teeth.
  • Dry mouth.
  • Excessive bacterial activity on the tongue
  • Throat or tonsil infection.

Causes of Bad breath from airways

  • Sinusitis
  • Polyps.
  • Dryness.
  • Foreign body.
  • Hindered air or mucus flow.
  • Bronchitis.
  • Pneumonia.
  • Bronchiectasis (dilation of the bronchi of the lungs, usually from previous infection).

Causes of bad breath from oesophagus and stomach

  • Gastritis and food reflux.
  • Food stagnation.


  • Maintaining a good oral and dental hygiene.
  • Brushing teeth at least twice a day and preferably after each meal.
  • Using dental floss and inter-dental brush to remove any food particles wedged in the teeth.
  • Use a tongue cleaner and clean right to the back of the tongue.
  • Use a mouthwash recommended by your dentist or pharmacist
  • Drink plenty of fluids, avoiding too much coffee.
  • Clean your mouth after eating milk products, fish and meat.
  • Eat fresh, fibrous vegetables.
  • Visit your dentist regularly and have your teeth professionally cleaned as required.

Please consult the online doctor for bespoke, evidence based and confidential medical advice.