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Byline: Ronald Kotulak
Sep. 19--Researchers in Europe believe they can explain the increasing body of evidence that children raised in clean, urban environments are more likely to develop allergies and asthma.
A study published Wednesday suggests that these children have less exposure to endotoxin, a chemical on the surface of bacteria, which are commonly found in dirt and around animals. If proved, the finding could be a key to developing a vaccine for asthma, now the No.1 chronic disease of children.
Health experts caution that the results have to be verified by other studies, and it may take years before any new therapies can be developed.
Nevertheless, the report in Wednesday's issue of the New England Journal of Medicine adds to a growing list of observations about who seems to be protected from allergies, including asthma: farm children, children in day care…
Source: HighBeam Research, Scientists Find Cleanliness Could Lead Way -- to Asthma.