Hay fever: Avoiding certain foods and gut health could hold the key to relief.

Certain foods such as aged cheese, red wine, bacon, chocolate, and melon can trigger hay fever symptoms due to their high amounts of histamine and pollen. Histamine is the chemical that causes an allergic reaction, and it is found in fermented and aged foods. Additionally, some fruits, vegetables, nuts, and cereals can trigger hay fever symptoms due to oral allergy syndrome. However, cooking the food can reduce the allergy, and not all dairy and fruits cause this problem.