(CBS News) A new guidance statement from the American College of Physicians states what a lot of American adults may already know: They should get screened for colon cancer once they get older to reduce their risk of dying from the nation’s number two cancer killer.

“Only about 60 percent of American adults aged 50 and older get screened, even though the effectiveness of colorectal cancer screening in reducing deaths is supported by the available evidence,” Dr. Virginia L. Hood, president of American College of Physicians, said in a written statement.