NEW YORK (Reuters Health) - When it comes to carbohydrates, it's not how much you eat, but which kind, that makes a difference to your bathroom scale, new research shows. People who are overweight do not appear to eat more carbohydrates overall than people who weigh less, the researchers report in the American Journal of Epidemiology. However, they found that overweight people tend to eat more refined carbohydrates, such as white bread and pasta, which cause a rapid spike in blood sugar. "Total amount of carbohydrate is not related to body weight," Dr. Yunsheng Ma of the University of Massachusetts...