Earlier this year, the federal government withdrew its recommendation that Americans should floss their teeth twice a day. It turns out there's not much proof that flossing is effective at preventing cavities and gum disease. This week on WRVO's health and wellness show "Take Care," hosts Lorraine Rapp and Linda Lowen speak Associated Press reporter Jeff Donn about how he broke the story that led to reversal of the recommendations. More of this interview can be heard on "Take Care," WRVO's