The American Diet’s Getting Healthier? Not So Fast

Americans are hungry for some good news about nutrition. When the average diet of a nation is actually abbreviated to SAD—the Standard American Diet—well, who wouldn’t be?

Finally, it appears, there are some positive findings on the food front. A study just published in JAMA analyzed a set of nationally representative surveys, in which people were asked what they ate in the last 24 hours, from the years 1999 to 2012. The authors discovered that parts of the U.S.