Which factor does NOT increase the risk for colorectal cancer screening?

Being physically active does not increase the risk for colorectal cancer screening; in fact, it is associated with a lower risk for developing colorectal cancer. Regular physical activity helps to maintain healthy body weight, improves digestive health, and may help reduce the time it takes for food to move through the colon, which can decrease the risk of cancer development.

In contrast, a family history of colorectal cancer, being over the age of 45, and having a low-fiber diet are all factors that contribute to an increased risk. Family history indicates a genetic predisposition, while age is a well-established risk factor, with screening recommendations typically beginning at 45 due to rising incidence in this age group. A low-fiber diet can lead to constipation and may contribute to the development of polyps or cancer, thus heightening the urgency for screening. Therefore, being physically active stands out as a protective factor rather than a risk factor in the context of colorectal cancer screening.