researcher have long debated whether it's healthier to be slim or physically fit. One recent study conducted at brigham and women's hospital in boston examined data on 38,000 women 45 and older, whose weight, height, and physical activity were recorded for about seven years. The researcher found that women who wereoverweight were three times more likely than normal-weight women to develop diabetes. Even walking four or more hours per week did not lower the overweight women's risk of getting diabetes. In another study by the University of Florida, researchers examined 906 women who had been tested for possible heart problems. They found that an obese woman who was physically fit, with a strong cardiovascular system, had a low risk of developing heart disease. But they also discovered that a slim woman who was not physically fit had a relatively high risk of developing heart disease.