An increasing number of children are allergic to some kind of nut, with potentially fatal consequences. About 20% seem to "grow out of" their allergy in time, though there is a chance the allergy may come back. Now scientists have found this chance can be lowered -- by eating peanuts.

Studying 68 children who had outgrown a peanut allergy, researchers at Johns Hopkins Children's Center in Maryland, USA, found none of those who regularly ate peanut products redeveloped an allergy, whereas those who did have a recurrence had seldom eaten peanuts. This suggests children who've outgrown an allergy should eat peanuts at least once a month, but consult your doctor first.