Who is at risk of colon cancer?
A. There are about 106,000 new cases in the USA each year and 35,000 cases in the UK. More than 80% of these are in people over 60. Obesity can increase the risk of cancer of the colon by up to one third. High alcohol intake is also known to increase the risk of colon cancer. However, some common drugs, such as aspirin-like painkillers and hormone replacement therapy, are known to reduce the risk of bowel cancer.