• Digestive Disorders Foundation U.K. charity for research and information on digestive disorders, including patient information, news, and how to make donations.

• Digestive Health Center of Excellence offers complete diagnosis and treatment of digestive disorders, Crohn's disease, ulcers, hepatitis, reflux, liver disease, colon cancer, and other gastrointestinal diseases.

• Fatty acid Oxidation Disorder (FOD) Network contains online newsletter and support group for families touched by this disorder. Stories, memories, and research updates.

• Focus on Digestion medical information for patients suffering from digestive disorders.

• Focus on Digestion Features news, clinical trial and articles.

• GlaxoSmithKline Institute for Digestive Health (GIDH) supports scientific research efforts and raises public awareness about issues relating to digestive health.

• Hereditary Fructose Intoleranz (HFI) provides information, recipes, diet list, and contacts.

• Hirschsprungs & Motility Disorders Support Network support group for parents that have kids or adults who suffer from motility disorders, such as GERD, Hirschsprung's Disease, or other similar problems.

• Web Directory: Heartburn-help contains links to information for heartburn, gastroesophageal reflux disease (GERD), hiatal hernia, and other digestive diseases.