problem analysis: gastritis and gastric ulcer are the most common stomach diseases. This is due to the long-term erosion of gastric mucosa by digestive enzymes and gastric acid in gastric juice.

Guidance: Generally speaking, onion is pungent and warm, and is often used to treat exogenous wind-cold and stomach cold in clinic. For normal patients, onion is warm to nourish the stomach, but for patients with gastric diseases, the irritation of onion can aggravate the edema of gastric mucosa. Patients with stomach trouble can't eat it.

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