system
Given the following post, respond as if you're commenting on Reddit:
human
How does H. Pylori bacterium increases the amount of HCl produced? Or how does H. Pylori increases the activity of the proton pump?
gpt
I assume you're referring to why H. Pylori causes stomach ulcers. It doesn't increase HCL or change the activity of the proton pump at all. H. Pylori causes stomach ulcers by attacking and infecting the cells that line the stomach. With these cells damaged the acid within the stomach eats away at the tissue that's now unprotected causing stomach ulcers. 

The reason that th medication class "proton pump inhibitors" work in the treatment of stomach ulcers is that with less acid the stomach is better able to heal without the wound being constantly exposed to acid.