She charges that his group is like the Taliban. He claims that her group's dangerous message has "spread like a virus across North America, Europe and elsewhere." The issue inspiring such invectives? Not religion, but diets. The latest spat is between Veronica Atkins, widow of Robert Atkins, the doctor who promoted a low-carbohydrate diet, heavy on the meats, and the Physicians Committee for Responsible Medicine, a group that advocates vegetarianism. The New York Times