American Association for the Study of Liver Diseases 
- Information relating to liver diseases and treatment.

American Gastroenterological Association 
- Medical information from the AGA Patient Center

Crohn's and Colitis Foundation of America 
- Dedicated to finding the cure for Crohn's disease and ulcerative colitis

Crohn's and Me
- A site dedicated to learning to live with Crohn's Disease.

Digestive Health and Nutrition Magazine 
- for Americans dealing with digestive disorders

Gastroesophageal Reflux Disease 
- Questions and Answers resource

Hepatitis C 
- from the National Institutes of Health

International Foundation for Functional Gastrointestinal Disorders 
- A resource for those afflicted with gastrointestinal disorders

Irritable Bowel Syndrome (IBS) 
- One of the most common disorders seen by primary care physicians

National Digestive Diseases Information Clearinghouse 
- Wealth of information about digestive diseases and ailments

WEB MD
- A leading source for timely health and medical news and information