Does gastric ulcer cause bad breath?

Patient's question:

Lately, I've been feeling like there's a really strong odor in my mouth. Even after chewing gum, it doesn't help much, and the odor comes back quite quickly. I have a stomach ulcer, and I'd like to ask experts if stomach ulcers can cause bad breath, or if there's a connection between this stomach condition and bad breath?

Doctor's answer:

Does gastric ulcer cause bad breath? Patient gender: Male
Lately, I’ve been feeling like there’s a strong odor in my mouth, and chewing gum doesn’t help much at all. The bad breath comes back quickly. I have a gastric ulcer, so I’d like to ask experts if gastric ulcer can cause bad breath—is there a connection between this stomach disease and bad breath? Thank you.
Gastric ulcer greatly affects patients. Once symptoms are noticed, it’s important to seek medical attention promptly. At the same time, dietary issues should be paid close attention to, with a focus on light and simple foods. I hope gastric ulcer patients can receive professional treatment.