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flag Candle smoke exposure impairs brain function within hours, raising dementia concerns.

flag A University of Birmingham study links candle use to short-term cognitive decline, finding that exposure to candle smoke impaired focus, emotion recognition, and task performance within four hours. flag Participants exposed to candle-generated particulate matter showed reduced working memory and psychomotor speed compared to those in clean air. flag Researchers warn low-level indoor pollution may harm brain function over time, potentially increasing dementia risk, and urge greater awareness of household air quality.

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