According to the American Cancer Society, about one in three adults who are eligible for screenings are not tested. WASHINGTON — The American Cancer Society updated its screening guidelines for a common cancer in the U.S. The recommendations are aimed at expanding screening options for colorectal cancer, which is the leading cause of cancer-related deaths in both men and women. Early detection significantly raises the odds of survival. According to the updated guidelines, those at average risk will be advised to take two at-home stool tests every three years. One of them tests for DNA mutations, looking for hidden blood…