For some years, the rate of new colorectal cancer (CRC) cases in the United States has been dropping, thanks to increased screening. Men and women were advised to start getting colonoscopies at age 50, with follow-up frequency dependent on findings.
Then last year, a study led by American Cancer Society (ACS) researchers reported that new CRC cases were increasing among young and middle-aged adults. Indeed, once age was taken into account, those born in 1990 had double the risk of colon cancer and quadruple the risk of rectal cancer compared to people born around 1950, when risk was lowest.
That prompted the ACS to update its...