" So why don’t the CDC and the AHA admit uncertainty, even at the potential cost of public health? Perhaps because dictating dietary rules, a sacred role that was once the province of priests, contributes to a savior complex. Saviors must remain unwaveringly certain about their mission. They cannot reverse positions, because doing so undermines their authority in the eyes of their followers. And in the case of dietary rules that require substantial willpower to follow—like drastic reductions in sodium—any uncertainty on the part of dieters can lead to failure. Better to conceal scientific ambiguity than to compromise the willpower of your followers. "

― Alan Levinovitz , The Gluten Lie: And Other Myths About What You Eat