New research on the “hygiene hypothesis”.
From a University of Copenhagen media release:
In our study of over 400 children we observed a direct link between the number of different bacteria in their rectums and the risk of development of allergic disease later in life,” says Professor Hans Bisgaard, consultant at Gentofte Hospital, head of the Copenhagen Prospective Studies on Asthma in Childhood, and professor of children’s diseases at the Faculty of Health Sciences, University of Copenhagen.
“Reduced diversity of the intestinal microbiota during infancy was associated with increased risk of allergic disease at school age, he continues. But if there was considerable diversity, the risk was reduced, and the greater the variation, the lower the risk.
Could the hygiene hypothesis help explain why child asthma rates seem to have increased over the past 20 years — as opposed to the EPA/enviros contention that air pollution, which has been on a dramatic decline during the same period, is the cause?