Us dietary guidelines

The guidelines are the basis of everything from school lunch programs to the diets promoted in bestselling books, but in recent years some scientists have begun to question the one-size-fits-all approach.

"We're gonna ask Dunkin' Doughnuts and Starbucks, show us the safety data that shows that it's OK for a teenage girl to drink an iced coffee with 115 grams of sugar in it. I don't ...