Colorectal Cancer Screnning Colonoscopy Under Hypnosis

This study tests whether hypnosis can replace sedation drugs during colonoscopy for colorectal cancer screening. The goal is to make colonoscopy more comfortable and accessible for patients who prefer to avoid medication-based sedation. **You may be eligible if...** - You are 18 or older and are scheduled for a screening colonoscopy (due to a positive stool test, family history of colon cancer, personal history of polyps or bowel disease, or symptoms) - You are enrolled in the French social security system - You have signed written consent **You may NOT be eligible if...** - You need an emergency colonoscopy - You have had part of your colon surgically removed - You have a psychiatric illness or serious behavioral disorders - You have difficulty reading or understanding questionnaires - You have a condition that prevents effective hypnosis Talk to your doctor to see if this trial is right for you.