It wasn’t the kind of reporting to force a U.S. president to resign. Still, the Associated Press did cause some red faces among dental and diet experts by exposing a lack of research rigor and a bit of publication sleight-of-hand. This all turned on debunking a bit of oral health dogma: Do we really need to floss our teeth every day?
The AP reviewed two dozen research studies and found “weak, very unreliable,” and “very low” quality data to support the staunch position propounded by federal agencies, as well as two leading dental associations, that flossing is a must, and that it produces superior health outcomes versus simple daily tooth brushing.
Uncle Sam has flogged flossing for decades, including recommending it in the evidence-based national Dietary Guidelines put out every five years. This year that advice mysteriously disappeared in the latest guidelines, the news service found.