Can onions and chili peppers be eaten together?

Jun 10, 2025 Source: Cainiu Health

Dr. Yu Yongchao

Introduction

Under normal circumstances, onions and chili peppers can be consumed together, but it is not recommended to eat them in large quantities. However, chili peppers are highly irritating, and excessive consumption can easily damage the gastrointestinal mucosa, leading to discomfort such as stomach pain and diarrhea. It is advisable to control the amount consumed according to individual tolerance, especially for patients with gastric ulcers or esophagitis who should consume them cautiously. Both onions and chili peppers are considered spicy and may trigger adverse reactions.

Generally speaking, onions and chili peppers can be consumed together, but excessive consumption is not recommended. Detailed analysis is as follows:

Chili peppers are rich in vitamin C, capsaicin, and other components that can promote blood circulation, enhance appetite, and help the body eliminate cold and dampness. Onions contain active substances such as sulfides and flavonoids, which can inhibit bacteria, reduce inflammation, and regulate blood lipids. When combined, vitamin C and antioxidant components work synergistically to help improve immunity and maintain cardiovascular health. Additionally, capsaicin can stimulate the secretion of saliva and gastric juice. When combined with the pungent taste of onions, it can enhance appetite, making it especially suitable for consumption when appetite is poor.

However, chili peppers are quite irritating, and excessive consumption may easily damage the gastrointestinal mucosa, causing discomfort such as stomach pain and diarrhea. It is recommended to control the amount consumed according to individual tolerance, particularly for patients with gastric ulcers or esophagitis, who should consume them cautiously. Both onions and chili peppers are spicy and may trigger heat-related symptoms; therefore, individuals with sensitive skin or those prone to excessive internal heat should consume them in moderation to avoid exacerbating inflammation or symptoms of heatiness.

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