Asthma attacks reduced in tree-lined urban neighbourhoods

People living in polluted urban areas are far less likely to be admitted to hospital with asthma when there are lots of trees in their neighbourhood, a study by the University of Exeter’s medical school has found.

The study into the impact of urban greenery on asthma suggests that respiratory health can be improved by the expansion of tree cover. In the most polluted urban areas, trees had a particularly strong association with fewer emergency asthma cases. In relatively unpolluted urban neighbourhoods trees did not have the same impact.

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