What should I do about bad breath caused by poor stomach health?

When stomach discomfort is accompanied by bad breath, it's important to identify the underlying cause. Possible causes include improper diet, functional dyspepsia, chronic gastritis, gastric ulcers, etc. For this condition, the following measures can be taken: 1. Adjust diet: Reduce intake of high-fat, high-sugar, and spicy foods; choose light, easily digestible foods such as rice porridge and noodles. 2. Medication: Based on specific symptoms, take appropriate medications under a doctor’s guidance—for example, domperidone tablets or Jianwei Xiaoshi tablets for indigestion; omeprazole enteric-coated capsules for chronic gastritis. 3. Improve lifestyle habits: Maintain good oral hygiene by brushing teeth morning and night; avoid overeating and maintain regular meal times. It is recommended to seek medical attention promptly, obtain an accurate diagnosis, and then follow appropriate treatment accordingly.