Chlorinated Swimming Pools Jump-Start Asthma
August 03 2006
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The incidence of asthma has risen by over 50 percent in developed countries in the last 25 years. As many as 150 million people worldwide suffer from asthma, and roughly 180,000 die from it each year.
Exposure to chlorine bi-products, both in air and in water, could be a factor in the rising number of cases of childhood asthma. This could mean that indoor swimming pools might be partly responsible for the rise. A new Belgian study links the prevalence of childhood asthma with the number of indoor pools.
After taking into account additional factors such as climate, scientists found that childhood asthma increases by 2-3 percent for every indoor swimming pool in a geographical area.
Other risk factors for the illness include a family history of the illness and exposure to tobacco smoke.