An estimated 20 million Americans have sleep apnea, and many don’t even know it. On the Mayo Clinic Radio podcast, Dr. Timothy Morgenthaler, a Mayo Clinic sleep medicine specialist, discusses diagnosing and treating sleep apnea. Dr. Morgenthaler also serves as chief patient safety officer for Mayo Clinic. Also on the podcast, Dr. Brent Bauer, director of research for the Mayo Clinic Integrative Medicine Program, and Dr. Karen Mauck, a Mayo Clinic internal medicine specialist, discuss how to know which CBD products are safe to use. And Dr. Kaisorn Chaichana, a Mayo Clinic neurologic surgeon, explains minimally invasive surgical techniques for treating brain tumors.