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Long-term exposure to certain PM2.5 particles increases depression risk in older adults, especially those with health issues, a study of over 23 million people found.
Long-term exposure to specific PM2.5 components—sulphate, elemental carbon, and soil dust—is linked to higher depression risk in older adults, especially those with preexisting health conditions, a large study of over 23 million people found.
These components, mainly from fossil fuel combustion, traffic, and dust, may harm the brain through oxidative stress, inflammation, and metal accumulation.
The study, published in JAMA Network Open, found their combined effect exceeded that of total PM2.5 alone, suggesting the need for targeted air quality policies to protect vulnerable groups.
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La exposición a largo plazo a ciertas partículas PM2.5 aumenta el riesgo de depresión en los adultos mayores, especialmente en aquellos con problemas de salud, según un estudio realizado en más de 23 millones de personas.