Final answer:
True. H. pylori infection often leads to ulcers.
Step-by-step explanation:
True. Ulcers often result from infection by the Helicobacter pylori bacterium. H. pylori is able to tolerate the acidic environment of the human stomach and has been shown to be a major cause of peptic ulcers. It colonizes epithelial cells in the stomach, damages the stomach lining, and causes inflammation, which leads to ulcers.