After the mild pollen season 2022, a more difficult season for pollen allergy sufferers is now expected towards spring. Spring 2022 was a mild season with birch pollen, says researcher Åslög Dahl.
The birch fluctuates with releasing pollen, so if it has been a milder season last year, it will be aMore difficult season the following year. The number of allergy sufferer has increased dramatically over the past 60 to 70 years and it is not certain whether it will subside or continue.