Studies show that 70-85% of people with ASD have treatable gastroenterological disorders such as colitis, Crohn's Disease and inflammatory bowel diseases. Noticeable symptoms include undigested food, chronic or alternating diarrhea and/or constipation, posturing and bloated belly. Diagnostic testing can include colonoscopy, endoscopy, pillcam and Comprehensive Digestive Stool Analysis (CDSA).