Susan Sterler, a registered nurse at Mayo Clinic in Arizona, introduces the first video in our series of constipation videos. The series covers the common causes and symptoms of constipation, the role of the colon, lifestyle and behavior modifications, and helpful tips for relieving constipation. In this video, Susan explains what is constipation as well as its causes and symptoms. To watch all four videos, please click the following link: http://www.youtube.com/playlist?list=PLSWR1ylG_6JZAEyFvMBdKSQhsfFfjJeam