Dis Colon Rectum. 1989 Jan;32(1):1-8 1, 2 Medscape Medical News: Chronic Constipation a Warning Sign for GI Disorders 3 Medscape Medical News: Role of Intestinal Flora in the Development of Allergy 4 Science News: Link between intestinal bacteria, depression found 5 Am Fam Physician. 2011 Aug 1;84(3):299-306 6 BMC Clin Pharmacol. 2011; 11: 2 7 BMC Clin Pharmacol. 2011; 11: 2 - Table 2 8, 9 National Institute of Diabetes and Digestive and Kidney Diseases: Symptoms and Causes of Constipation 10 Mayo Clinic: Causes of Constipation 11 American Society of Colon and Rectal Surgeons: Anal Fissure 12 London Urology: What is genitourinary prolapse? 13 UCSF: Constipation 14 American Society of Colon and Rectal Surgeons: Rectal Prolapse 15 University of Maryland Medical Center 16 Mercola.com 17 UCLA Oppenheimer Center for Neurobiology of Stress