How come you brush and sometimes floss your teeth - in addition to almost always chewing gum - so why does your breath still stink?

Bad breath can be caused by either having cavities, gum disease or bad hygiene. To check for cavities and gum disease, you must consult your dentist. But until then, you must brush and floss every day (which you are doing already), but also, it's very important to brush your tongue! Yes, your tongue! I hope this tip is useful. Another common cause of the bad breath is duodenal ulcer which can be either caused by excessive amount of Hydrochloric acid in your stomach or some bacteria such as Helicobacterium Pylori.