On the Mayo Clinic Radio program, Dr. John Kisiel, a Mayo Clinic gastroenterologist, discusses colorectal cancer. and the importance of recommended screening tests. March is Colorectal Cancer Awareness Month. Also on the program, Dr. Michelle Mauermann, a Mayo Clinic neurologist, explains peripheral neuropathy, a nerve condition that causes numbness and pain in the hands and feet. And Dr. Thomas Salinas, a Mayo Clinic prosthodontist, shares how oral health affects heart health.