Exercise can help cut your risk for heart disease and diabetes, no matter how late in life you start, say researchers from the University of Western Ontario. Investigators compared two groups of healthy but sedentary adults ages 55 to 75. One group began regular exercise and the other group remained sedentary. After 10 years, about 28 percent of the sedentary group developed metabolic syndrome, a collection of factors—which include high cholesterol and blood pressure—that raise the risk for heart disease and diabetes. Only 11 percent of the exercisers developed the syndrome.