The Dark Matter of Food

We’ve all heard the advice: “Eat more fiber.” But the reality behind that seemingly simple recommendation is much more complex when it comes to human health. While consumption of dietary fiber has been associated with decreased risks of obesity, type 2 diabetes, coronary heart disease and certain gastrointestinal disorders, honing in on how specific fibers — or more broadly, carbohydrates — from different foods affect the gut microbiome and thus human health remains a black box.