6 of 10: Green tea destroys bacteria which improves the health of teeth and gums.

The compounds containing catechins in green tea can destroy viruses like that of influenza thus protecting your body from getting infected.  It can also inhibit the growth of the virus called Streptococcus Mutans which causes cavities and tooth decay and also helps in the formation of plaque in the mouth. Not only does green tea improve your dental health but it also reduces bad breath.

Conclusion: Green tea inhibits the growth of bacteria in your mouth, improves your dental health and reduces bad breath.