Food allergies affect 250 million people worldwide, and have risen by 350 per cent in the last 20 years. Peanut allergy has increased at the greatest rate.

While allergies to egg, milk, wheat and soy generally resolve during childhood, nut and seafood allergies often persist throughout life. But now a trial for the treatment of peanut allergy at the Murdoch Children's Research Institute has shown the strongest evidence yet that a cure may be possible.