Bad breath
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Bad breath: Condition overview
Help for an embarrassing problem

Bad breath is annoying, but it is often easily prevented once you are aware of the problem. Consumer Reports Health is here to help with expert evidence and advice about how to treat it.

Key points about bad breath
  • It’s hard to know yourself if you have bad breath. A family member or close friend may tell you.
  • You can get a rough idea of whether your breath smells bad by licking your wrist. Wait a few seconds for it to dry and then smell your wrist. That tells you how the end of your tongue smells.
  • Long-lasting bad breath is usually caused by a problem in your mouth. But some medical conditions elsewhere may cause bad breath. These include sinusitis, tonsillitis, and some lung or stomach problems.
  • For nine out of 10 people, bad breath is caused either by gum disease or bacteria that grow on your tongue. Gum disease is caused by a coating on your teeth (plaque) invaded by bacteria. If you have gum disease, your dentist can help you with treatments.
  • You may have bad breath because your mouth is dry. Some medications reduce saliva production.
  • To reduce the chances of having bad breath, brush your teeth and use an anti-bacterial mouthwash twice a day, see your dentist regularly, drink enough water, eat regular healthy meals, and try to breathe through your nose.
  • If you are prone to having bad breath, avoid smoking, drinking alcohol and eating spicy food.
  • You may think you have bad breath when you actually don’t.
  • No one treatment for bad breath has been shown to work for sure. You may need to try several different things, or a combination of treatments.
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