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Published online 29 October 2007 | Nature | doi:10.1038/news.2007.201
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Caesarian sections may increase asthma risk
Review hints that exposure to mum's microbes protects against asthma.
Children delivered by caesarian section are 20% more likely to develop asthma, concludes a new review of previous research. This may help to explain the skyrocketing incidence of asthma in recent decades, the researchers suggest.
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