There are more calls to further lower the bowel cancer screening age.
An Otago University study shows rates of early onset colorectal cancer have risen by 26% each decade over the past 20 years.
Rates for Māori aged under 50 years rose 36%.
Professor Frank Frizelle told Kerre Woodham that the screening age needs to be lowered from the current age of 60 to at least 45.
He said that a lot of the issue is that young people having bowel cancer is unexpected, so symptoms are often ignored.
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