Japan Reports Widespread Hay Fever Linked to Forest Policies

Hay fever affects millions of people across Japan each spring, turning seasonal allergies into a recurring national health issue. Al Jazeera reported that the increase in cases is linked to past policies that altered the country’s forests and environment.

Background on the Issue Government programs decades ago encouraged widespread planting of certain tree species to support timber production and prevent soil erosion. Those plantings now release large amounts of pollen during the spring months, contributing to higher allergy rates.

Health services record elevated numbers of consultations for sneezing, itchy eyes, and respiratory discomfort during peak pollen periods. Public information campaigns advise residents on medication use and outdoor activity timing to limit exposure.