Air pollution exposure during prenatal and early childhood years may increase the risk of dementia in old age, according to a Scottish study tracking individuals born in 1936.
Gary Fuller reports for The Guardian.
In short:
- Researchers in Scotland linked childhood air pollution exposure to a higher risk of dementia, including Alzheimer’s, though the results are not fully conclusive.
- Historical air pollution data was reconstructed using records on coal use and industry, showing strong associations with pollution levels in the 1930s.
- Mid-life pollution exposure seemed to have a paradoxical protective effect, likely because other diseases caused earlier deaths before dementia could develop.
Key quote:
“Air pollution exposure is a life-course problem with long-term detrimental effects on health. Our study reinforces the importance of reducing air pollution exposure throughout life, especially during vulnerable periods in the prenatal and early childhood.”
— Otto-Emil Jutila, University of Edinburgh researcher and first author of the study
Why this matters:
Scientists are increasingly concerned that fine particulate matter and other pollutants might contribute to neurodegenerative conditions like dementia as individuals age. For older populations, the implications are twofold. Not only do they face increased risks from long-term exposure, but reducing pollution today could also provide immediate health benefits, such as improved cardiovascular function and reduced hospitalizations for lung-related illnesses. Tackling air pollution is, therefore, not just about preserving the environment — it’s about preserving minds and bodies for decades to come.
Related EHN coverage: Op-ed: Sexism, pollution and Alzheimer’s
