" Since the 1950s, if not earlier, researchers have known that the foods we eat and the form in which they come—indigestible fiber, refined grains and sugar, and all the rest—will influence which species of gut bacteria thrive and which don’t. That in turn will affect the digestibility of the fat, protein, and carbohydrates in the rest of our food and the effect on blood levels of cholesterol and triglycerides, "

― Gary Taubes , The Case Against Sugar