Comment by skuzye

Not sure about the other stuff but food allergies in Europe are very high as well https://www.sciencedirect.com/science/article/pii/S193945512.... It seems to be linked with economic development.

Anecdotally, we have no history of food allergies in the family but my daughter has severe sesame allergy, milk, egg and nuts allergy. We are from South America but live in the UK.