Did you know that half of all the people allergic to birch pollen have cross-allergies?
Cross-allergies are common with birch allergies, in fact, birch has shown to be the pollen who is most common to create them. You can recognize the cross-allergies with symptoms like itchy throat and mouth when eating fruits and nuts. Do you recognize any of these symptoms when eating foods like this in the pollen season?

  • Apple
  • Pear
  • Nuts (walnut, hazelnut, brazil nut, nutmeg)
  • Almonds
  • Peanuts
  • Raw carrot and potatoes 
  • Strawberries
  • Stone fruits (plum, cherries, apricot, peach, nectarine)
  • Kiwi
  • Soybeans 
  • Curry
  • Celery

It could be a cross allergy! Also called “pollen food syndrome”.

Cross-allergies occur when the immune system can’t distinguish between the substance in the pollen allergen and the food allergens and increase if you have other pollen allergies. 

Why pollen allergy from birch is so common is because it is so dominant in Northern and Central Europe.  It has even shown to be a negative factor in the quality of life due to its connection to so many cross-allergies. Grass allergy can also cause cross-allergies, but is not connected to as many foods as birch pollen.

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Cross-allergies are common with birch allergies

Cross-allergies are common with birch allergies

(Source: pollenkollen.se, https://onlinelibrary.wiley.com/doi/full/10.1111/all.13758)