Bad breath can be brought on by numerous different causes! Here are some of the major causes that cause bad breath:

Intake of several food items is the main cause of short term foul smelling breath. Food item like garlic is a widely popular food, that can cause severe bad breath problems. The problem is caused only after you finish consuming it. It is because of the fact that the active components in garlic get absorbed into your blood stream at a later level and are thrown into the air by your lungs, when you breathe out.

Bad breath may also be caused by  other causes also. These causes include excess of smoking, which leaves an unpleasant taste in the mouth as well as bad smell that is further exhaled from the lungs in the
air, while we breathe out. Oral cleanliness is the best way to cure it.

The accumulation of plaque on teeth is responsible for the development of bacteria on  food that remains in the gums and teeth. It cause a consistent bad breath. It is important to brush thrice a day in this case.

Another known cause for this so called disease is dry mouth. A dry mouth is the home to several allergic reactions.

The condition of dry mouth can be caused by some asthma and bronchitis medications and inhalers as well. The impact of medicine is so critical in this case that it can severely cause adverse affect on the creation of saliva, decreasing the amount of saliva produced. This causes dry mouth and hence bad breath. Appropriate treatments are available to deal with these conditions.