Half-siblings of people with colon cancer have nearly the same colon cancer risk as full siblings do — a 6% cumulative lifetime risk compared with 7% — and a higher risk than other second-degree relatives have, researchers recently reported. The risk may be due both to genetics and to shared environmental factors, and the finding
Patients with detectable fecal hemoglobin or a positive guaiac fecal occult blood test result face a higher risk of dying from colorectal cancer, compared with those who had a negative test result, according to a study in Gut. This is as expected, as blood in the stool is a well-known sign of potential colon cancer.
A recent study showed that men who watched more than four hours of TV daily had a 35% higher risk of colorectal cancer, compared with those who watched for no more than one hour per day. The study did not find a similar association among women but noted that men with higher levels of physical activity had
