Editors Note: I think this article is complete nonsense. The benefits of swimming outweigh the risks to an overwhelming degree. It's just an alarmist contrarian point of view for the sake of being so. By the way, I'm an asthmatic, without swimming, who knows where I'd be right now.
Swimming teachers and other people who spend a lot of time near chlorinated pools face an increased risk of breathing problems, Dutch researchers report.
Chlorine reacts with substances such as urine and sweat to create byproducts that can irritate the respiratory tract, most importantly chloramines, explain Dr. Jose Jacobs of the University of Utrecht in The Netherlands and colleagues in a report in the European Respiratory Journal.