Over the course of six mouths, the team gave the children larger and larger exposures to peanuts to build up their bodies' tolerance to the nut. By the end of the six month period the children could eat five peanuts a day and have no reaction. This is the first food allergy to be mitigated by exposure.
Even though more testing needs to be done on the method, it does give people with the debilitating allergy hope. People with peanut allergies agonize over food products and often can't eat in certain restaurants because of the allergy.
If the allergy is curable that means improved quality of life. (It also means airlines might start serving peanuts again. Here's hoping.)
Originally reported by the BBC.