Experts say overall dental health is on the decline due to poor brushing

Some dental health experts say overall oral health could get much worse. Already 42% of adults over the age of 30 have gum disease and an overwhelming majority of adults 20 to 64 have experienced tooth decay at some point. It is not just in the US though. Dental hygiene it's suffering worldwide and experts say it's largely because people actually not brushing their teeth correctly. NBC health contributor Elizabeth Cohen joins us now to talk more about this. Elizabeth, good morning. Good to have you with us. ...