New research links air pollution to respiratory infections and the diminished immune systems of many older adults.The study, published in Nature Medicine, found that inhaled particles accumulated in immune cells in lymph nodes associated with the lungs. That weakened the cells’ resistance to respiratory infections.
Inhaled pollutants can collect in the lymph nodes associated with the lung, accumulating over decades and weakening the immune cells' ability to fight off lung infections.
The diminished power of the immune system in older adults is usually blamed on the aging process. A new study shows that decades of inhaled particulates due to air pollution also take a toll.
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