Finnish study: Working-age Alzheimer's lacks known risk factors

A study from the University of Oulu and the University of Eastern Finland finds that working-age adults with Alzheimer's disease do not show the typical known risk factors, suggesting a distinct etiological pathway for early-onset cases. The finding challenges current risk models and may shift research focus toward genetic or environmental factors specific to this population. The study's methodology and sample size are not detailed, so the robustness of the claim is uncertain.