The efficacy of chewing gum is probably primarily due to the effect of salivation, combined with the cleansing effect of mastication. Some new chewing gums offer an anti-bacterial flavor, such as Breathanol™ (which we developed), which provides a longer lasting effect.

Chewing gum has its downsides, and should be used wisely. First, excessive chewing can affect the joints connecting your jaw. Some people also claim that chewing gum gets your stomach all excited and prepared for food, when none is forthcoming.

The best compromise appears to be to chew gum for a couple of minutes at a time. Also, since chewing is not exactly a welcome habit for bankers, teachers, doctors or lawyers on the job, I recommend that one chews a piece of gum (preferably sugarless) during brief visits to the bathroom. One can chew for a minute or so in privacy, and part with the wad in the washroom, before stepping back into society.