Watch the moving story of Liz Tapping and her son Miller Campbell, whose lives have been changed by the work of researchers at Murdoch Childrens Research Institute.

Carrying an adrenaline auto injector (AAI) (an EpiPen or Anapen), as a treatment for food allergy, can have a detrimental effect on a child's quality of life, independent of other factors that can also impact on quality of life such as whether they have previously suffered anaphylaxis.

Researchers have identified that an eczema gene increases people's risk of being sensitive to common allergic foods, but they say other unknown environmental factors determine whether people develop a full blown food allergy or food tolerance.