With our nation faced with a growing epidemic of diabetes, Harvard researchers have found that eating a bowl (one serving) of whole-grain cereal a day--cereals such as Cheerios, Wheaties, Total and Wheat Chex--may reduce the risk of diabetes by as much as 34 percent. According to the American Diabetes Association, 16 million Americans have type 2 (Adult Onset) diabetes and 625,000 new cases are diagnosed each year.