May 22, 2012 3:06 pm Diet, Exercise May Prevent Cancer Recurrence Studies show four hours of exercise per week decreased risk of death and recurrence in breast cancer patients by up to 34 percent. News4’s Doreen Gentzler reports. Local 2:14 Opioid crisis: National drug take back day on Saturday 2:55 Concussion treatment: Returning to school and limiting screen time may help, study finds 2:39 What to know about ADHD medication and pregnancy 2:08 How to pick the best running shoes for outdoor exercise 3:41 Nail biting: A psychiatrist shares tips