Halitosis means bad breathe. It is due to various causes
A ) Dieting : Dieters may develop unpleasant breathe due to restriction of Carbohydrates. By restricting Carbohydrate the body utilize fat for energy purpose when fat are utilized in the body ketone bodies (Acetone , Acetoacetate , Beta hydroxy butyrate ) are formed .Acetone is expelled through lungs.
B ) Diabetes : Diabetics also develop unpleasant breath due to the above reason.
C ) Xerostomia : Halitosis is also caused by Xerostomia. Xerostomia refers to dryness of mouth resulting from diminished secretion of saliva.
D ) Food : Vegetables like Garlic , onion also cause objectionable breathe.
E ) Periodontal Disease : Disease of gums are also responsible for Halitosis.
F ) Indigestion & Constipation : are another cause of bad breathe
Flossing , Brushing & use of mouth fresheners will mask Halitosis for a short while. One may not get rid of Halitosis unless the underlying cause is treated.