Around 50% of us suffer from halitosis (or bad breath) at some time in our lives, and one in four adults suffer from it on a regular basis. In this exclusive guide, Dr McKenna demonstrates a simple technique to check for bad breath, and advises on ways we can ultimately prevent the 'death breath'. She also reminds us that around 90% of bad breath cases are due to poor oral hygiene, so a visit to the dental hygienist at least once a year wouldn't hurt. Well, it might do…but would you rather have bad breath? Watch this video dental hygiene tutorial and learn how to treat halitosis or bad breath.