A Prospective Cohort Study on Colorectal Cancer Screening in Community Population

This is a long-term screening study following people in the community to understand the risk factors for colorectal cancer (bowel cancer). Participants will complete health questionnaires and be followed over time to see who develops colorectal cancer and what factors are associated with it. **You may be eligible if...** - You are 40 years old or older - You have full decision-making capacity - You are willing and able to complete annual follow-up interviews - You are able to share information about any cancer diagnosis from other hospitals with the research team **You may NOT be eligible if...** - You have a personal history of colorectal cancer or another active cancer - You have had part of your colon or rectum removed previously - You are currently receiving cancer treatment - You have had major surgery or a blood transfusion/transplant in the past 3 months - You are pregnant or breastfeeding - You have an autoimmune disease, hereditary condition, or serious mental illness Talk to your doctor to see if this trial is right for you.