The human digestive system consists of the gastrointestinal tract plus the accessory organs of digestion. Digestion involves the breakdown of food into smaller and smaller components, until they can be absorbed and assimilated into the body. However, diseases may arise because of some factors. Common digestive disorders include gastroesophageal reflux disease, cancer, irritable bowel syndrome, lactose intolerance and hiatal hernia.

Digestive System Diseases: Common, Rare, Serious Types

https://www.verywellhealth.com/digestive-system-diseases-7375274

Diseases of the digestive tract can cause temporary or chronic symptoms. Learn which ones are most common and warning signs of an undiagnosed condition.