23/02/2006 - Duke: Duke study posits presidents had mental illness U-Wire via NewsEdge Corporation : By Haley Hoffman, The Chronicle (Duke) DURHAM, N.C. -- No one would ever expect the general who led the Union army to victory in the Civil War to have a debilitating fear of blood. But Ulysses S. Grant was among the 49 percent of former U.S. presidents afflicted by mental illness, according to an article published recently by psychiatrists at the Duke University Medical Center. Jonathan Davidson, professor of psychiatry and director of the Anxiety and Traumatic Stress Program, has a particular interest in history,...