For millions of Britons, this time of year heralds the start of the hay fever season, meaning months of misery as their lives are blighted by constant sneezing, runny noses and itchy, watery eyes.Whether you become one of those unlucky enough to be afflicted — and to what extent — has always been thought to be down to a mixture of genetics and the environment, with those living in urban areas, for instance, suffering worse than people in the countryside.And while for many sufferers pollen is seen as public enemy number one, it may not be entirely to blame.
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