"Pool Chlorine Tied To Lung Damage in Elite Swimmers"

"Competitive swimmers who train at indoor chlorinated swimming pools may have lung changes similar to those seen in people with mild asthma, a new study has found.

Researchers from France and Canada compared lung tissue and breathing tests from twenty-three elite Canadian swimmers, whose average age was 21, to ten mild asthmatics and 10 healthy, non-allergic people of the same age. Tissue samples and tests were taken during the off-season when swimmers were not competing."

Lindsey Konkel reports for Reuters January 11, 2012.