What is the effect of chewing gum?

Nowadays, we have many kinds of chewing gums.  When we chew gums, we will be relaxed.  It means that gums relieve our tension.  It will lead the settlement of a mental condition.  In additon, there are some other effects.  For example, if we chew gums after meals, it will clean our teeth.  In addition, gums workchewing gum to shake off drowsiness and aging prevention.  We can maintain our health to keep chewing gums more than 30 minutes every day.  Chewing gums have many advantages for our health.