Chew on This

Hard gum isn't so good for you

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(HealthDayNews) -- If you chew an old piece of gum, you know how your jaw almost hurts.

But did you also know it can impact your heart and blood pressure?

The department of orthodontics at the University of Naples in Italy published a study, in the Archives of Oral Biology, that proved old gum should probably be tossed away.

The study found that when 10 healthy volunteers chewed on pieces of very hard gum at the rate of 80 chews a minute, their heart rate increased by 11 beats per minute, and their blood pressure went up by 14 millimeters of mercury.

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