Since the Dietary Guidelines for Americans (DGA) were launched in 1980, obesity and other nutrition-related diseases have increased sharply.

1 - DGAs begin and Obesity in US_revised.jpg
Serious questions have been raised about the overall oversight of the overall DGAC process… Hopefully, the next time the question will be asked: Are the guidelines themselves contributing to the problem? The emphasis on carbohydrates over the last 20 years and the impact it’s had on — on these issues that we’re talking about with obesity or diabetes, other things.
— U.S. Representative Michael Conaway (R-TX), House Committee on Agriculture hearing on the Dietary Guidelines for Americans (October 7, 2015)
We are on the wrong trajectory.
— Sylvia Burwell Matthews, former Secretary of US-HHS, testifying to the House Committee on Agriculture about the rising rates of obesity and type 2 diabetes in America (October 7, 2015)