A recent population-based study suggests that elevated airborne pollen concentrations during examination periods may be associated with modest reductions in students’ academic performance. The findings highlight a potential link between seasonal allergic exposure and cognitive performance during high-stakes academic assessments. The study, published in the Journal of Epidemiology and Community Health, analyzed data from students who participated in Finland’s national high school matriculation examinations conducted during the spring pollen season. These examinations are an important determinant of eligibility for university admission within the Finnish education system.
Seasonal allergic diseases triggered by airborne pollen affect hundreds of millions of individuals globally. Symptoms such as sneezing, nasal congestion, rhinorrhea, ocular irritation, headache, and fatigue are characteristic of Allergic Rhinitis. Beyond their physical manifestations, these symptoms may also impair cognitive processes such as attention, concentration, and memory, which are essential for optimal academic performance.
Previous research has suggested that allergic rhinitis can adversely affect sleep quality, daytime alertness, and overall productivity. Studies have also reported that individuals with poorly controlled allergic symptoms may experience reduced concentration, slower information processing, and impaired cognitive efficiency. In school-aged children and adolescents, allergic diseases have been associated with increased absenteeism, decreased classroom participation, and lower academic performance, highlighting the broader educational impact of uncontrolled allergy symptoms.
In the present study, researchers evaluated examination results of students residing in the metropolitan regions of Helsinki and Turku, along with surrounding municipalities in southern Finland. The analysis focused on pollen released by alder and hazel trees, which are known to produce significant pollen concentrations during the spring examination period.
Daily pollen concentration data were integrated with meteorological and air quality information obtained from the Finnish Meteorological Institute. Using statistical regression modelling, the investigators assessed the association between pollen exposure levels and examination performance.
Higher pollen concentrations were associated with small but measurable declines in examination scores. The association was particularly noticeable in mathematics-related subjects, which require sustained concentration and cognitive precision. The impact appeared more pronounced when pollen concentrations reached higher levels during the examination period.
Researchers suggest that symptoms related to allergic rhinitis may contribute to these findings. Nasal congestion, sleep disturbance, fatigue, and reduced alertness can potentially impair concentration and cognitive efficiency during examinations. In addition, immune responses and inflammatory pathways triggered by allergen exposure may transiently influence neurocognitive function.
The current findings suggest that environmental factors such as airborne pollen may influence students’ cognitive performance during important academic assessments. Further research may help clarify how seasonal allergies affect learning outcomes and whether effective allergy management could help mitigate such effects.
Reference
- Hugg TT, Lehto J, Jaakkola JJK, Kiihamäki SP, Koivuranta M, Pätsi S, et al. Pollen exposure and matriculation exam performance among students in Finland. J Epidemiol Community Health. 2026 Mar 3. doi:10.1136/jech-2025-224112 PubMed PMID: 41775647.