There are many reasons why people should consider having a colonoscopy. For some people, it is recommended after digestive issues arise such as rapid weight loss, blood in your stool, anemia, inflammatory bowel disease or abdominal pain. Other times, it is used as a screening method to check if the patient has colorectal cancer. It is recommended that both men and women consider having a colonoscopy after the age of 40 or if any digestive problems arise. Although the procedure can be considered invasive, it is very beneficial and far less uncomfortable than most people imagine. Here is a guide on how a colonoscopy works, how to prepare and what to expect.How Does a Colonoscopy Work?The patient will begin my resting in a comfortable position on the left side of their body while a thin, flexible tube with a camera in inserted in the anus. In order to ensure the patient has minimal discomfort, they will first consume both pain medication and a sedative. The doctor performing the procedure will move the tube slowly to see the interior of the large and small intestines. They may need to insert air or even suction out any blockage in order to get the best view possible.How Does One Prepare for a Colonoscopy?Although the procedure is often dreaded, it is relatively quick and painless. However, there is a preparation period that needs to take place in the days prior to the procedure. Patients will need to eliminate solid food from their diets for two or three days before the colonoscopy, consuming only liquids like broth, juice, water and sports drinks. In addition to altering your diet, you will need to stop taking most medications prior to the procedure. Make sure you have arranged to have someone drive you home afterwards, and plan for a few hours of rest immediately following the procedure.Although at first glance a colonoscopy can seem like a stressful procedure, it is immensely beneficial for anyone who is at risk for colorectal cancer or who has abdominal and digestive complaints. By understanding what to expect the procedure will go by quickly and smoothly.