WEDNESDAY, Nov. 30, 2022 (HealthDay News) — Americans are eating more whole grains than ever before — but it’s still not enough. Moreover, not everyone agrees on what whole grains actually are, according to a new study that found competing definitions. The increase in whole grain intake over the past two decades is either 39.5% or 61.5%, according to researchers from the Tufts University Friedman School of Nutrition Science and Policy in Boston. But by any definition, Americans are not getting the recommended amount of at least 3 ounces daily. Researchers studied overlapping definitions from the Dietary Guidelines for Americans, the U.S. Food and Drug Administration, the American Heart Association,…