Recent inquiries into the deaths of two British teenagers after eating sesame and peanut highlighted the sometimes tragic consequences. In August, a six-year-old girl in Western Australia died as the result of a dairy allergy.

The rise in allergies in recent decades has been particularly noticeable in the West. Food allergy now affects about 7% of children in the UK and 9% of those in Australia, for example. Across Europe, 2% of adults have food allergies.

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