Jerry has a weak gastrointestinal system and has recently found out that he has ulcers. the primary factor related to his ulcers is probably: multicellular?

Many peptic ulcers had been attributed to an organism specifically a bacteria called Helicobacter pylori or are commonly known as H. pylori. It is common in the gastrointestinal tract but an overgrowth will cause ulcers. It attacks the lining of the stomach and intestines that causes ulcers and cancers for some people.