Norton J. Greenberger, MD, a clinical professor of medicine at Harvard Medical School and a senior physician at Brigham and Women’s Hospital, both in Boston. He is a former president of the American Gastroenterological Association and coauthor, with Roanne Weisman, of 4 Weeks to Healthy Digestion (McGraw-Hill).
Why more fiber isn't always the answer. Constipation is one of those ailments that most people think they know how…
