Question: what are the positive effects of chewing gum?
Answer: Slim your waistline. According to a study by the University of Liverpool, chewing gum can slightly curb your cravings, which may help you make better eating choices. ... 
Burn calories just by chewing. ... 
Keep your teeth healthy. ... 
Improve memory. ... 
Fight drowsiness. ... 
Reduce heartburn. ... 
Lessen depression. ... 
Eliminate nausea.