Colonoscopies could reduce cancer risk by 40%: Study
WASHINGTON (AFP) - A colonoscopy every 10 years could prevent 40 percent of colorectal cancers, according a massive US study, supporting the effectiveness of the commonly-used test.
Those with family history of these types of cancer - the second-leading cause of cancer deaths in the US - should have more frequent screenings, the study in the New England Journal of Medicine said on Wednesday.
The results confirm the current recommendations for colonoscopies, offering evidence it is particularly useful in preventing cancers that originate in the proximal, or upper, part of the colon.
"Our study provides strong evidence that colonoscopy is an effective technique for preventing cancers of both distal and proximal regions of the colorectum," said Shuji Ogino, a lead author from the Havard School of Public Health.