Dr. Siegel's tips for reducing risk of prediabetes Fox News senior medical analyst Dr. Marc Siegel reacts to a new study showing one in three American teenagers have prediabetes. NEW You can now listen to Fox News articles! New research suggests that picking up the weights may be more effective than hitting the treadmill when it comes to controlling blood sugar and preventing diabetes . A team from Virginia Tech’s Fralin Biomedical Research Institute has discovered that resistance training —