Line Streets with Trees to Prevent Serious Asthma Attacks, Say Scientists
The Telegraph (November 17, 2017)

Asthma hospital admissions could be cut dramatically by lining streets with trees, the largest ever study has found. Researchers from the University of Exeter's medical school studied the impact of urban greenery on the respiratory condition and say the results suggest planting trees could help reduce the dangerous effects of traffic fumes.

However large areas of grassed gardens or parkland could make asthma worse, the findings suggest, because grass pollen merges with pollution - triggering a condition known as 'greyfever.'

Asthma affects about five million people in Britain, costs the NHS £1 billion a year and causes around 1,000 deaths annually.

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