Digestive Disease - All diseases that pertain to the gastrointestinal tract are labelled as digestive diseases.
https://en.wikipedia.org/wiki/Digestive_disease
Digestive Diseases: MedlinePlus - This site offers information on digestive diseases causes, prevention, symptoms and treatment of the digestive diseases.
https://medlineplus.gov/
IFFGD - IFFGD addresses issues surrounding life with gastrointestinal (GI) or digestive disorders.
https://iffgd.org/