This is the first of two pieces looking at the use of bronchodilating drugs to treat asthma in athletes – and their changing place on WADA’s prohibited list. *** Asthma is far from uncommon in cross-country skiers: a 1994 study in Norway found that high-level skiers were about three times as likely to self-report as asthma patients compared to the normal population. A 1999 study by researchers in Norway, Sweden, and Nebraska found that even...