请分析一下 colorectal cancer 的风险因素，并将回答整理为三条独立的段落。每段不得少于两句话。第一个段落以“Colorectal cancer, ...”开头，第二个段落的第一句话包含 “Furthermore, dietary factors...”， 第三个段落的最后一句话包含 “... ultimately plays a pivotal role in disease development and prevention.”。
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Colorectal cancer, also known as colon cancer or bowel cancer, is a malignant tumor arising from the inner wall of the large intestine. This form of cancer can develop over many years, evolving from non-cancerous polyps into malignant tumors, which highlights the importance of early detection and treatment.

Furthermore, dietary factors significantly contribute to the risk of developing colorectal cancer. A diet high in red meats and processed foods, coupled with low intake of fruits, vegetables, and fiber, increases the risk. Consuming adequate fiber can reduce this risk by promoting regular bowel movements and minimizing the time potentially harmful substances remain in the colon.

Lifestyle choices, such as smoking and excessive alcohol consumption, also increase the likelihood of colorectal cancer. Regular physical activity, maintaining a healthy weight, and routine screenings are crucial preventive measures. Genetic predisposition and family history, however, ... ultimately plays a pivotal role in disease development and prevention.
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