* Beef, caffeinated drinks, chocolate, citrus juice, corn, dairy products, eggs, oats, oysters, peanuts, salmon, strawberries, cantaloupes, tomatoes and wheat.

* Cold drinks: Too cold food will reduce immunity and cause respiratory allergies.

* Irritant food: such as pepper and mustard, which can easily irritate respiratory mucosa.

* Specially processed or refined food.

* Artificial pigments: especially yellow No.5 pigment.

* Avoid eating food additives such as vanillin, benzaldehyde, cineole and monosodium glutamate.

2. Patients with allergic rhinitis should eat the following foods.

* Eat more foods containing vitamin C and vitamin A: spinach, Chinese cabbage, Chinese cabbage, white radish and so on.

* Isothermal food of ginger, garlic, leek and coriander.

* Glutinous rice, yam, jujube, lotus seeds, sweet kernels, brown sugar, longan, etc.