Scientist at Work | David Healy His mother in Ireland is entirely unaware of his international reputation, as far as he can tell. His neighbors in the hamlet of Porthaethwy, on an island off the coast of Wales, are equally oblivious, or indifferent. His wife, who knows too well the furor he has caused, says simply, "How could you be right and everyone else wrong?" Dr. David Healy, a psychiatrist at the University of Cardiff and a vocal critic of his profession's overselling of psychiatric drugs, has achieved a rare kind of scientific celebrity: he is internationally known as both...