Colon cancer prices plunge after screenings increase, study reports As use of colonoscopy has increased, the amount of colon cancer diagnoses dropped 30 % in the past decade in Americans older than 50. The Wall Street Journal: More Screenings Place Dent In CANCER OF THE COLON The incidence of colon cancer, declining because the mid-1980s, plunged an additional 30 percent last decade among Americans 50 and old as more people had colonoscopies, a new study discovered. The drop in colon-cancer death rates accelerated as well, falling about 3 percent a calendar year between 2001 and 2010, compared with 2 percent a calendar year in the previous decade, according to the American Cancer Society study of government data tadalis-sx.net/tadalis-by-ajanta.html .