Doubts are being cast over the sharp rise in food allergies among children, with a health watchdog saying many could have been wrongly diagnosed.
Up to 8% of children under three now have food allergies - a dramatic rise since 1990.
But NICE raised concern about the reliance on self-diagnosis, such as the use of testing kits bought online.
The health watchdog cited research showing that a fifth of self-diagnosed cases were inaccurate.
But it also called on GPs to improve their practices in some draft guidelines.
It comes as allergies are increasingly being seen as a major child health problem in western countries.
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