Are Americans wasting $448 million a year on dental floss?

If you’ve been feeling guilty about ignoring your dentist’s advice about flossing all these years, we’ve got some good news for you.

“There’s little proof that flossing works,” the Associated Press reported this week.

According to the AP story, since 1979 the federal government has recommended flossing, most recently in its Dietary Guidelines for Americans. In the federal government’s latest dietary guidelines, issued this year, the flossing recommendation was removed. “In a letter to the AP, the government acknowledged the effectiveness of flossing had never been researched, as required.”

The news organization examined 25 different studies about the effectiveness of dental floss and concluded that evidence for its benefits is “weak.

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