“The most interesting result was that dietary fiber was protective for respiratory disease and infections,” he tells WebMD in an email. “This was a big surprise. It was even more surprising that the effect appeared larger than for heart attack and stroke.”
“Eating more fiber, particularly fiber from grains, may be related to reduced risk of dying from many different types of diseases — not just cardiovascular disease,” he says.
The new U.S. dietary guidelines recommend that at least half of all grains consumed be whole and unrefined. The refining process removes all the bran, which contains the fiber. The goal for fiber is 25 grams per day for women 28 grams per day for men, and as it stands, most of us fall short.