If you constantly feel like you have snot, mucous or phlegm dripping down from the back of your nose combined with a pretty bad case of rotten breath, you may well be suffering from a condition known as Post Nasal Drip.

Post Nasal Drip occurs when excess mucous is produced by your sinuses and accumulates at the back of your nose or throat.

The exact causes of Post Nasal Drip vary from person to person and include allergies, certain medications, colds and flu, pregnancy and other hormonal changes, smoking, rhinitis (i.e. inflammation of the nose or its mucous membrane) and sinusitis (i.e. inflammation of the sinuses).

The American Academy of Periodontology states that a common misconception among many people is that bad breath is caused by the foods you eat.

Sure, your breath is never going to smell grand after a spicy curry or a nice big dose of garlic-laced foods, but foods are not the number one enemy when it comes to keeping your mouth smelling sweet.

Nor too are serious medical conditions. You may find it reassuring to hear that only a very small percentage of cases of halitosis are caused by problems with parts of the body such as the intestines or stomach.