Colorectal cancer is a type of cancer that starts in the colon or rectum. While the exact cause of colorectal cancer is unknown, several risk factors have been identified that may increase a person's likelihood of developing this type of cancer.

1. Age: The risk of colorectal cancer increases with age, with the majority of cases being diagnosed in individuals over the age of 50. It is recommended that individuals begin regular screening for colorectal cancer starting at this age.

2. Family history: A family history of colorectal cancer or certain inherited genetic conditions, such as Lynch syndrome or familial adenomatous polyposis, can increase a person's risk of developing colorectal cancer. Individuals with a family history of colorectal cancer may need to start screening earlier or undergo more frequent screening.

3. Personal history of polyps or inflammatory bowel disease: Individuals who have a history of colorectal polyps or certain inflammatory bowel diseases, such as Crohn's disease or ulcerative colitis, are at an increased risk of developing colorectal cancer.

4. Unhealthy lifestyle factors: Certain lifestyle factors have been associated with an increased risk of colorectal cancer, including a diet high in red and processed meats, a lack of physical activity, obesity, smoking, and heavy alcohol consumption.

5. Race and ethnicity: African Americans are at a higher risk of developing colorectal cancer compared to other racial and ethnic groups. The reasons for this disparity are not fully understood but may involve genetic, environmental, and socioeconomic factors.

It's important to note that having one or more of these risk factors does not mean that an individual will definitely develop colorectal cancer. However, being aware of these risk factors can help individuals take steps to reduce their risk, such as maintaining a healthy lifestyle, undergoing regular screenings, and discussing their family history with a healthcare provider. Early detection and treatment play a crucial role in improving outcomes for individuals with colorectal cancer.