Colorectal cancer is one of the most preventable and treatable cancers when caught early. Health advocates are pushing to lower the screening age, something a new study suggests could prevent thousands of cases and deaths.

Health advocates are pushing for the recommended age for colorectal cancer screening to be lowered from 50 to 45, responding to an increase in cases among people under 50. A recent study using predictive modeling indicates that starting screening at age 45 could prevent approximately 12,000 colorectal cancer cases and 5,200 deaths over a 40-year period.

While the proposed change could require significant investment and increased capacity for colonoscopies, experts believe the benefits may justify the shift. However, the majority of colorectal cancer cases still occur in older adults, and many eligible individuals are not currently participating in screening programs.

Health advocates push to lower colorectal cancer screening age

It was within a month. Their stories are unnerving. There was dark blood in the stool. Young, seemingly healthy and yet close to death. We knew that there was a colon cancer happening but when he said stage four my mind went blank. Like I couldn't process words. I couldn't process thoughts. Colorectal Cancer Canada says it's not clear why the disease is rising in people under 50. But this ad they're filming will push to change the screening age. We are advocating that it be lowered to start the screening at 45 years old. In most of the country the recommended screening age is 50. Lowering it could come at a cost. An investment does have to be made and you know about a million more fit tests will have to be done and perhaps maybe another half a million colonoscopies will have to be done. Simply poke it into the stool. Fit tests are stool sample kits gathered by patients. They're inexpensive but if they flag an issue a colonoscopy is needed. Do we have the resources the capacity to take on additional colonoscopies? This study screening age with cancer incidence mortality and costs used modeling to predict the impacts of early colorectal cancer screening. It suggests screening at age 45 could lead to approximately 12,000 fewer colorectal cancer cases and about 5,200 fewer deaths over a 40-year period. Concluding lowering the screening age may be justified but evaluation of colonoscopy capacity is necessary. Adding this additional work on to what colonoscopists are already doing is what one of the concerns is. Still he thinks screening younger people would be beneficial. More countries including the UK are considering a similar shift. However the vast majority of colorectal cancer cases are in older adults. Even with screening available up to 40 percent of them aren't using it. Christine Birak, CBC News, Toronto.

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