What causes bad breath?
Bad breath is primarily caused by poor oral hygiene but can also be caused by retained food particles or gum disease.
Does bad breath come from other sources than the mouth?
Bad breath also may occur in people who have a medical infection, diabetes, kidney failure or a liver malfunction. Xerostomia (dry mouth) and tobacco also contribute to this problem. Cancer patients who undergo radiation therapy may experience dry mouth. Even stress, dieting, snoring, age and hormonal changes can have an effect on your breath. An odor that comes from the back of your tongue may indicate postnasal drip. This is where mucus secretion, which comes from the nose and moves down your throat, gets stuck on the tongue and causes an odor.
Why is saliva so important in the fight against bad breath?
Saliva is the key ingredient in your mouth that helps keep the odor under control because it helps wash away food particles and bacteria, the primary cause of bad breath. When you sleep, however, salivary glands slow down the production of saliva, allowing the bacteria to grow inside the mouth. To alleviate “morning mouth,” brush your teeth and eat a morning meal. Morning mouth also is associated with hunger or fasting. Those who skip breakfast, beware, because the odor may reappear even if you’ve brushed your teeth.
Do certain foods cause bad breath?
Very spicy foods, such as onions and garlic, and coffee may be detected on a person’s breath for up to 72 hours after digestion. Onions, for example, are absorbed by the stomach, and the odor is then excreted through the lungs. Studies even have shown that garlic rubbed on the soles of the feet can show up on the breath.