Allergies of various kinds are adding to the problems of the health administrators in the UK.
A report by a committee of the House of Lords says the country is lagging far behind the rest of Europe in its efforts to tackle allergies.
About a third of the UK population will develop an allergy of some sort during the course of their lives, says the report from the science and technology committee, as allergic diseases have trebled in the last 20 years to the point where the UK has one of the highest incidences in the world.
Allergic food reactions can kill, while hayfever, asthma and other debilitating conditions can hold children back at school and cause lifelong difficulties. Yet Britain, unlike other European countries, has failed to adopt treatments that can cure some allergy sufferers and the UK is short of specialists, says the committee.
It is particularly critical of the guidance given to pregnant women and young children not to eat peanuts - which it says should be immediately withdrawn.
Lady Finlay, who chaired the committee's year-long inquiry, said: "Academics and clinicians have told us that a growing body of evidence has suggested this guidance may not only be failing to prevent peanut allergy, but might even be counter-productive."
The evidence for avoiding peanuts is nine years old. "We reviewed it carefully and we're not convinced it stood up," she said. "We heard evidence that in some parts of the developing world where groundnuts are used as a kind of soup for weaning, and in Israel where peanuts are incorporated into a kind of rusk for weaning, they don't have the allergy that is developing here."