Fiber

Vox: Nearly all Americans fail to eat enough of this actual superfood - While we obsess about carbs and protein, we’ve ignored fiber — at our peril. By Julia Belluz

Fiber doesn’t just help us poop better — it also nourishes our gut microbiome. The science, while still pretty nascent, is fascinating and it points to the fact that the fiber gap may be even more damaging than we’ve realized.