Helpful Links

Scroll down for helpful links to informative patient resources.

Links and Resources
All external sites will open in a new browser window. You may need to set your browser to allow pop-ups. These links are provided as a courtesy. Portland Gastroenterology Center is not responsible for the availability, updating or accuracy of any information provided on these outside sites or for the privacy or security of these outside sites.

American Gastroenterological Association (AGA)

The American Gastroenterological Association (AGA) is dedicated to the mission of advancing the science and practice of gastroenterology. Founded in 1897, the AGA is the oldest medical-specialty society in the United States. Comprised of two non-profit organizations — the AGA and the AGA Institute — our 15,000 members include physicians and scientists who research, diagnose and treat disorders of the gastrointestinal tract and liver. The site offers excellent resources on a number of gastroenterological topics.

American College of Gastroenterology (ACG)

The American College of Gastroenterology represents more than 8500 digestive health specialists and is committed to providing accurate, unbiased and up-to-date health information to patients and the public.

Barrett’s Esophagus
Barrett’s Information from NIDDK

The National Institute of Diabetes and Digestive and Kidney Diseases provides information on Barrett’s Esophagus, including material on normal function of the esophagus, treatment and research.

Barrett’s Information from the American College of Gastroenterology

The ACG site features information on risk factors and treatment options.

American Cancer Society

Learn about colon and rectum cancer, risk factors, prevention, treatment and more. You can also read stories of hope from people whose lives have been touched by cancer.

National Cancer Institute

The National Cancer Institute (NCI) is a component of the National Institutes of Health (NIH), one of eight agencies that compose the Public Health Service (PHS) in the Department of Health and Human Services (DHHS). The NCI, established under the National Cancer Act of 1937, is the Federal Government’s principal agency for cancer research and training.

Colorectal Cancer (Centers for Disease Control and Prevention)

The Centers for Disease Control and Prevention (CDC) is one of the 13 major operating components of the Department of Health and Human Services (HHS), which is the principal agency in the United States government for protecting the health and safety of all Americans.

Celiac Disease
National Celiac Association

The National Celiac Association is dedicated to educating and advocating for individuals with celiac disease and non-celiac gluten sensitivities, their families, and communities throughout the U.S.

Celiac Disease Foundation

Provides important resources and information for people on gluten-free diets due to celiac disease, gluten intolerance, dermatitis herpetiformis, wheat allergy, or other health reasons. offers key gluten-free and wheat-free on-line resources that are helpful to anyone with special dietary needs. The site’s purpose is to raise celiac disease awareness, and to provide people who have it with enough information to get diagnosed and treated so that they can begin to lead more comfortable and healthy lives.

Local Celiac Disease Support

A growing network of chapters, local partners and resource people.

Family Doctor

Healthy information for the whole family including information on colonoscopy.

Colonoscopy: Wikipedia

Encyclopedia-style information on colonoscopy.

National Institute of Diabetes and Digestive and Kidney Diseases

NIDDK was established in 1980 to increase knowledge and understanding about digestive diseases among people with these conditions and their families, healthcare professionals, and the general public. To carry out this mission, NDDIC works closely with a coordinating panel of representatives from Federal agencies, voluntary organizations on the national level, and professional groups to identify and respond to informational needs about digestive diseases.


Coronavirus and Inflammatory Bowel Disease Patients
Crohn’s & Colitis Foundation of America (CCFA)

What IBD patients should know.

International Organization of IBD (IOIDB)

What patients with Ulcerative Colitis should know.


Crohn’s & Colitis
Crohn’s and Colitis Foundation of America

The Crohn’s and Colitis Foundation of America is a non-profit, volunteer-driven organization dedicated to finding the cure for Crohn’s disease and ulcerative colitis.

Microscopic Colitis

Information from the National Institute of Diabetes and Digestive and Kidney Diseases.

ERCP Procedure

American Society for Gastrointestinal Endoscopy

Learn about ERCP Procedures and how they can help your doctor evaluate and possibly treat your condition.

EUS Procedure

American Society for Gastrointestinal Endoscopy

Learn about EUS Procedures and how they can help your doctor evaluate and possibly treat your condition.

Irritable Bowel Syndrome
International Foundation for Gastrointestinal Disorders
IFGD, the International Foundation for Gastrointestinal Disorders, is a registered nonprofit education and research organization founded in 1991. IFGD addresses the issues surrounding life with gastrointestinal (GI) functional and motility disorders and increases the awareness about these disorders among the general public, researchers, regulators and the clinical care community.

The Mayo Clinic

Information on the digestive system and irritable bowel syndrome from the Mayo Clinic.

Liver Disease
American Liver Foundation

The American Liver Foundation (ALF) is the nation’s leading nonprofit organization promoting liver health and disease prevention. ALF provides research, education and advocacy for those affected by liver-related diseases, including hepatitis.

Hepatitis Foundation International

Offers an online learning center, newsletter and information about living with hepatitis.

Medline Plus

A service of the U.S. National Library of Medicine and the National Institutes of Health.

Hemochromatosis: Iron Disorders Institute

Health information about Hemochromatosis or excess iron.

American Heart Association

The American Heart Association mission is to reduce disability and death from cardiovascular diseases and stroke.

Great Nutrition Information at Your Fingertips provides easy access to the best food and nutrition information from across the federal government. It serves as a gateway to reliable information on nutrition, healthy eating, physical activity, and food safety for consumers, educators and health professionals.

Academy of Nutrition and Dietetics

The Academy of Nutrition and Dietetics is the world’s largest organization of food and nutrition professionals. ADA serves the public by promoting optimal nutrition, health and well-being. ADA members are the nation’s food and nutrition experts, translating the science of nutrition into practical solutions for healthy living.

United Ostomy Association, Inc.

UOAA is a national network for bowel and urinary diversion support groups in the United States. Its goal is to provide a nonprofit association that will serve to unify and strengthen its member support groups, which are organized for the benefit of people who have, or will have intestinal or urinary diversions and their caregivers.

Pancreatic Diseases
National Pancreas Foundation

The foundation supports the research of diseases of the pancreas and provides information and humanitarian services to those people who are suffering from these illnesses.

Reflux Disease (GERD)
International Foundation for Gastrointestinal Disorders, Inc.

Gastroesophageal reflux disease, or GERD, affects at least an estimated 5% to 7% of the global population of men, women, and children. (Prevalence based on once per day heartburn.) Heartburn and/or acid regurgitation experienced weekly has been found to occur in 19.8% of individuals.

National Institute of Diabetes and Digestive and Kidney Diseases

Information about Heartburn, Hiatal Hernia, and Gastroesophageal Reflux Disease (GERD).

National Institute of Diabetes and  Digestive and Kidney Diseases

Information regarding ulcers and other related conditions.