Video
Dr Adrian Morris reveals why this happens, and how you can avoid hayfever
Hayfever is part of the summer many of us dread, and with Britain slowly warming and the number of diesel cars increasing, the situation is set to get worse.
Research released to coincide with National Allergy Week (May 21 to 25) shows that you are far more likely to suffer from hayfever in a city as you are in the countryside.
Many Brits don't realise that diesel exhaust particles are at the root of many urban hayfever sufferers' pain.
This video, featuring world allergy expert Dr Adrian Morris, reveals why this happens and how you can avoid hayfever.
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