90% of bad breath cases are caused by decomposing bacteria in the mouth. The major reasons for bad breath include poor oral hygiene, gum disease, impacted food, ill fitting or damaged dental restorations, unclean dentures and excessive bacterial growth on the tongue - all of which can lead to oral malodor and an unpleasant taste in the mouth. The bad smell could also be due to a throat infection, sinus problems, low fluid intake or lack of salivary flow.

Chronic bad breath is caused by the gases released by dying bacteria in the mouth. Brushing, flossing, tongue cleaning and mouth washing can help enormously with bad breath. It is sensible to seek professional advice and tuition when choosing the right products for you. Transient halitosis is a temporary condition which can be caused by dehydration, strong foods cigarettes and alcohol. Make sure your diet is healthy and you keep hydrated.